实现GridView控件的多项功能：改变背景色、和FormView控件同步、隐藏指定列、添加删除确认、跳转到指定页。。[原创]
实现功能：1.改变GridView鼠标所在行背景色
2.和FormViewK控件实现同步显示
3.点击checkbox实现隐藏指定列
4.添加确认删除对话框
5.实现跳转到指定页
实现效果：
HTML代码：
后台代码：
2.和FormViewK控件实现同步显示
3.点击checkbox实现隐藏指定列
4.添加确认删除对话框
5.实现跳转到指定页
实现效果：
HTML代码：
1
<body>
2 <form id="form1" runat="server">
3 <div>
4
5 <table style="width: 1181px; ">
6 <tr>
7 <td class="style4">
8 </td>
9 <td class="style7" atomicselection="True">
10 <table style="width: 65%;">
11 <tr>
12 <td>
13 <asp:GridView ID="GridView1" runat="server" AllowPaging="True"
14 AllowSorting="True" Width="656px" AutoGenerateColumns="False" DataKeyNames="news_id"
15 onpageindexchanged="GridView1_PageIndexChanged"
16 onpageindexchanging="GridView1_PageIndexChanging"
17 onselectedindexchanged="GridView1_SelectedIndexChanged" PageSize="8"
18 onrowdatabound="GridView1_RowDataBound" Height="219px" onrowcancelingedit="GridView1_RowCancelingEdit"
19 onrowdeleting="GridView1_RowDeleting" onrowediting="GridView1_RowEditing"
20 onrowupdating="GridView1_RowUpdating" AutoGenerateSelectButton="True"
21 onsorting="GridView1_Sorting" AutoGenerateEditButton="True">
22 <Columns>
23 <asp:BoundField DataField="title" HeaderText="新闻标题" SortExpression="title" />
24 <asp:BoundField DataField="checkNum" HeaderText="点击量"
25 SortExpression="checkNum" />
26 <asp:CommandField HeaderText="编辑" ShowEditButton="True" />
27 <asp:CommandField HeaderText="删除" ShowDeleteButton="True" />
28 </Columns>
29 <PagerSettings FirstPageText="[第一页]" LastPageText="[最后一页]"
30 Mode="NextPreviousFirstLast" NextPageText="[下一页]" Position="TopAndBottom"
31 PreviousPageText="[上一页]" />
32 <RowStyle ForeColor="#000066" />
33 <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
34 <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
35 <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
36
37 </asp:GridView>
38 </td>
39 </tr>
40 <tr>
41 <td>
42 <table style="width:100%;">
43 <tr>
44 <td valign="top">
45 <asp:CheckBox ID="CheckBox1" runat="server" AutoPostBack="True"
46 Font-Size="Small" oncheckedchanged="CheckBox1_CheckedChanged" Text="隐藏点击量"
47 ToolTip="隐藏或显示点击量" />
48
49 </td>
50 <td align="right" class="style12" valign="top">
51 共<asp:Label ID="Label4" runat="server" Font-Size="Large"
52 ForeColor="#660033" style="font-weight: 700"></asp:Label>
53 页 当前在第<asp:Label ID="Label5" runat="server"
54 style="font-weight: 700; color: #993333; font-size: large"></asp:Label>
55 页 </td>
56 <td align="right" valign="top">
57 跳转到第<asp:TextBox ID="TextBox3" runat="server"
58 Width="30px"></asp:TextBox>
59 页
60 <asp:Button ID="Button4" runat="server" Text="跳转" onclick="Button4_Click" />
61 </td>
62 </tr>
63</table>
64 </td>
65 </tr>
66 <tr>
67 <td>
68 <hr />
69 </td>
70 </tr>
71 </table>
72 </td>
73 <td class="style2">
74 </td>
75 </tr>
76 <tr>
77 <td class="style5">
78 </td>
79 <td class="style8" atomicselection="True">
80 <asp:FormView ID="FormView1" runat="server" AllowPaging="True" CellPadding="4"
81 ForeColor="#333333" Width="669px" BorderColor="#0066FF"
82 BorderStyle="Solid" BorderWidth="1px" onpageindexchanged="DoNothing"
83 onpageindexchanging="DoNothing">
84 <PagerSettings Visible="False" />
85 <FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
86 <RowStyle BackColor="#EFF3FB" />
87 <EditItemTemplate>
88 <table style="width:100%; height: 124px;">
89 <tr>
90 <td >
91 新闻标题：</td>
92 <td>
93 <asp:TextBox ID="TextBox1" runat="server" Text='<%# Eval("title") %>'
94 Width="344px" AutoPostBack="True"></asp:TextBox>
95 </td>
96 <td>
97 </td>
98 </tr>
99 <tr>
100 <td class="style13">
101 新闻图片：</td>
102 <td class="style13" valign="bottom">
103 <asp:Image ID="Image1" runat="server" Height="149px"
104 ImageUrl='<%# Eval("pic") %>' Width="204px" />
105 <br />
106 <asp:FileUpload ID="FileUpload1" runat="server" Height="24px" Width="200px" />
107
108 <asp:Button ID="Button5" runat="server" Height="20px" onclick="Button5_Click"
109 Text="上传图片" Width="67px" />
110 </td>
111 <td class="style13">
112 </td>
113 </tr>
114 <tr>
115 <td class="">
116 新闻详情：</td>
117 <td>
118 <asp:TextBox ID="TextBox2" runat="server" Height="144px"
119 Text='<%# Eval("content") %>' TextMode="MultiLine" Width="342px"
120 AutoPostBack="True"></asp:TextBox>
121 </td>
122 <td>
123 </td>
124 </tr>
125 <tr>
126 <td class="">
127 </td>
128 <td>
129 <asp:Button ID="Button2" runat="server" onclick="Button2_Click" Text="更新" />
130
131 <asp:Button ID="Button3" runat="server" onclick="Button3_Click" Text="取消" />
132 </td>
133 <td>
134 </td>
135 </tr>
136
137 </table>
138 </EditItemTemplate>
139 <PagerTemplate>
140 <hr style="height: -12px" />
141 </PagerTemplate>
142 <ItemTemplate>
143 <table align="left" style="width: 578px">
144 <tr>
145 <td class="style11" >
146 新闻标题：</td>
147 <td valign="top">
148 <asp:Label ID="Label1" runat="server" Text='<%# Eval("title") %>'
149 style="font-weight: 700"></asp:Label>
150 </td>
151 <td class="style10">
152 <b>点击量：</b></td>
153 <td >
154 <asp:Label ID="Label2" runat="server" Text='<%# Eval("checkNum") %>'
155 ForeColor="#CC0000" style="font-weight: 700"></asp:Label>
156 </td>
157 </tr>
158 <tr>
159 <td class="style11" >
160 </td>
161 <td >
162 <asp:Image ID="Image2" runat="server" Height="169px"
163 ImageUrl='<%# Eval("pic") %>' Width="265px" />
164 </td>
165 <td colspan="2" width="60">
166 </td>
167 </tr>
168 <tr>
169 <td class="style11" >
170 </td>
171 <td >
172 <hr style="height: -12px" />
173 </td>
174 <td >
175 </td>
176 </tr>
177 <tr>
178 <td valign="top" class="style11">
179 <b>正文：</b></td>
180 <td>
181 <asp:Label ID="Label3" runat="server" Height="114px"
182 Text='<%# Eval("content") %>' Width="319px"></asp:Label>
183 </td>
184 <td colspan="2">
185 </td>
186 </tr>
187 <tr>
188 <td class="style11" >
189 </td>
190 <td >
191 <asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="编辑" />
192 </td>
193 <td colspan="2">
194 </td>
195 </tr>
196 </table>
197 </ItemTemplate>
198 <PagerStyle BackColor="#006699" ForeColor="White" HorizontalAlign="Center" />
199 <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
200 <HeaderTemplate>
201 <table style="width: 100%; height: 10px;">
202 <tr>
203 <td align="center" class="style10">
204 详细新闻</td>
205 </tr>
206 </table>
207 </HeaderTemplate>
208 <EditRowStyle BackColor="#2461BF" />
209 </asp:FormView>
210 </td>
211 <td>
212 </td>
213 </tr>
214 </table>
215
216 </div>
217 </form>
218</body>
<body>2
<form id="form1" runat="server">3
<div>4
5
<table style="width: 1181px; ">6
<tr>7
<td class="style4">8
</td>9
<td class="style7" atomicselection="True">10
<table style="width: 65%;">11
<tr>12
<td>13
<asp:GridView ID="GridView1" runat="server" AllowPaging="True" 14
AllowSorting="True" Width="656px" AutoGenerateColumns="False" DataKeyNames="news_id" 15
onpageindexchanged="GridView1_PageIndexChanged" 16
onpageindexchanging="GridView1_PageIndexChanging" 17
onselectedindexchanged="GridView1_SelectedIndexChanged" PageSize="8" 18
onrowdatabound="GridView1_RowDataBound" Height="219px" onrowcancelingedit="GridView1_RowCancelingEdit" 19
onrowdeleting="GridView1_RowDeleting" onrowediting="GridView1_RowEditing" 20
onrowupdating="GridView1_RowUpdating" AutoGenerateSelectButton="True" 21
onsorting="GridView1_Sorting" AutoGenerateEditButton="True">22
<Columns>23
<asp:BoundField DataField="title" HeaderText="新闻标题" SortExpression="title" />24
<asp:BoundField DataField="checkNum" HeaderText="点击量" 25
SortExpression="checkNum" />26
<asp:CommandField HeaderText="编辑" ShowEditButton="True" />27
<asp:CommandField HeaderText="删除" ShowDeleteButton="True" />28
</Columns>29
<PagerSettings FirstPageText="[第一页]" LastPageText="[最后一页]" 30
Mode="NextPreviousFirstLast" NextPageText="[下一页]" Position="TopAndBottom" 31
PreviousPageText="[上一页]" />32
<RowStyle ForeColor="#000066" />33
<SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />34
<PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />35
<HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />36
37
</asp:GridView>38
</td>39
</tr>40
<tr>41
<td>42
<table style="width:100%;">43
<tr>44
<td valign="top">45
<asp:CheckBox ID="CheckBox1" runat="server" AutoPostBack="True" 46
Font-Size="Small" oncheckedchanged="CheckBox1_CheckedChanged" Text="隐藏点击量" 47
ToolTip="隐藏或显示点击量" />48
49
</td>50
<td align="right" class="style12" valign="top">51
共<asp:Label ID="Label4" runat="server" Font-Size="Large" 52
ForeColor="#660033" style="font-weight: 700"></asp:Label>53
页 当前在第<asp:Label ID="Label5" runat="server" 54
style="font-weight: 700; color: #993333; font-size: large"></asp:Label>55
页 </td>56
<td align="right" valign="top">57
跳转到第<asp:TextBox ID="TextBox3" runat="server" 58
Width="30px"></asp:TextBox>59
页 60
<asp:Button ID="Button4" runat="server" Text="跳转" onclick="Button4_Click" />61
</td>62
</tr>63
</table>64
</td>65
</tr>66
<tr>67
<td>68
<hr />69
</td>70
</tr>71
</table>72
</td>73
<td class="style2">74
</td>75
</tr>76
<tr>77
<td class="style5">78
</td>79
<td class="style8" atomicselection="True">80
<asp:FormView ID="FormView1" runat="server" AllowPaging="True" CellPadding="4" 81
ForeColor="#333333" Width="669px" BorderColor="#0066FF" 82
BorderStyle="Solid" BorderWidth="1px" onpageindexchanged="DoNothing" 83
onpageindexchanging="DoNothing">84
<PagerSettings Visible="False" />85
<FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />86
<RowStyle BackColor="#EFF3FB" />87
<EditItemTemplate>88
<table style="width:100%; height: 124px;">89
<tr>90
<td >91
新闻标题：</td>92
<td>93
<asp:TextBox ID="TextBox1" runat="server" Text='<%# Eval("title") %>' 94
Width="344px" AutoPostBack="True"></asp:TextBox>95
</td>96
<td>97
</td>98
</tr>99
<tr>100
<td class="style13">101
新闻图片：</td>102
<td class="style13" valign="bottom">103
<asp:Image ID="Image1" runat="server" Height="149px" 104
ImageUrl='<%# Eval("pic") %>' Width="204px" />105
<br />106
<asp:FileUpload ID="FileUpload1" runat="server" Height="24px" Width="200px" />107
108
<asp:Button ID="Button5" runat="server" Height="20px" onclick="Button5_Click" 109
Text="上传图片" Width="67px" />110
</td>111
<td class="style13">112
</td>113
</tr>114
<tr>115
<td class="">116
新闻详情：</td>117
<td>118
<asp:TextBox ID="TextBox2" runat="server" Height="144px" 119
Text='<%# Eval("content") %>' TextMode="MultiLine" Width="342px" 120
AutoPostBack="True"></asp:TextBox>121
</td>122
<td>123
</td>124
</tr>125
<tr>126
<td class="">127
</td>128
<td>129
<asp:Button ID="Button2" runat="server" onclick="Button2_Click" Text="更新" />130
131
<asp:Button ID="Button3" runat="server" onclick="Button3_Click" Text="取消" />132
</td>133
<td>134
</td>135
</tr>136
137
</table>138
</EditItemTemplate>139
<PagerTemplate>140
<hr style="height: -12px" />141
</PagerTemplate>142
<ItemTemplate>143
<table align="left" style="width: 578px">144
<tr>145
<td class="style11" >146
新闻标题：</td>147
<td valign="top">148
<asp:Label ID="Label1" runat="server" Text='<%# Eval("title") %>' 149
style="font-weight: 700"></asp:Label>150
</td>151
<td class="style10">152
<b>点击量：</b></td>153
<td >154
<asp:Label ID="Label2" runat="server" Text='<%# Eval("checkNum") %>' 155
ForeColor="#CC0000" style="font-weight: 700"></asp:Label>156
</td>157
</tr>158
<tr>159
<td class="style11" >160
</td>161
<td >162
<asp:Image ID="Image2" runat="server" Height="169px" 163
ImageUrl='<%# Eval("pic") %>' Width="265px" />164
</td>165
<td colspan="2" width="60">166
</td>167
</tr>168
<tr>169
<td class="style11" >170
</td>171
<td >172
<hr style="height: -12px" />173
</td>174
<td >175
</td>176
</tr>177
<tr>178
<td valign="top" class="style11">179
<b>正文：</b></td>180
<td>181
<asp:Label ID="Label3" runat="server" Height="114px" 182
Text='<%# Eval("content") %>' Width="319px"></asp:Label>183
</td>184
<td colspan="2">185
</td>186
</tr>187
<tr>188
<td class="style11" >189
</td>190
<td >191
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="编辑" />192
</td>193
<td colspan="2">194
</td>195
</tr>196
</table>197
</ItemTemplate>198
<PagerStyle BackColor="#006699" ForeColor="White" HorizontalAlign="Center" />199
<HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />200
<HeaderTemplate>201
<table style="width: 100%; height: 10px;">202
<tr>203
<td align="center" class="style10">204
详细新闻</td>205
</tr>206
</table>207
</HeaderTemplate>208
<EditRowStyle BackColor="#2461BF" />209
</asp:FormView>210
</td>211
<td>212
</td>213
</tr>214
</table>215
216
</div>217
</form>218
</body>后台代码：
1 using System;
2 using System.Collections;
3 using System.Configuration;
4 using System.Data;
5 using System.Linq;
6 using System.Web;
7 using System.Web.Security;
8 using System.Web.UI;
9 using System.Web.UI.HtmlControls;
10 using System.Web.UI.WebControls;
11 using System.Web.UI.WebControls.WebParts;
12 using System.Xml.Linq;
13 using System.Data.SqlClient;
14
15 //DetailsView 的AllowPaging属性设为true
16
17 namespace WebApplication1
18 {
19 public partial class GridView : System.Web.UI.Page
20 {
21 #region DAL
22 //静态变量
23 static string sqlConn = "Data Source=pc-200907030109\\sqlexpress;Initial Catalog=LINDERMAN;User ID=sa;Password=123456";
24 SqlConnection conn = new SqlConnection(sqlConn);
25
26 protected DataSet CreateDataSet(string sqlStr) //根据指定字符串生成数据集
27 {
28 SqlDataAdapter sda = new SqlDataAdapter(sqlStr, conn);
29 conn.Open();
30 DataSet ds = new DataSet();
31 sda.Fill(ds);
32 conn.Close();
33 return ds;
34 }
35
36 protected void ExecuteSql(string sqlStr) //执行指定SQL语句
37 {
38 SqlCommand comm = new SqlCommand(sqlStr, conn);
39 conn.Open();
40 comm.ExecuteNonQuery();
41 conn.Close();
42 }
43 #endregion DAL
44
45
46 protected void Page_Load(object sender, EventArgs e)
47 {
48 if (!IsPostBack)
49 {
50 //默认排序列为数据库中的checkNum列，升序排序
51 ViewState["SortOrder"] = "checkNum"; //必须在绑定数据前定义
52 ViewState["OrderDire"] = "DESC";
53 ViewState["news_id"] = FormView1.PageIndex.ToString();
54 }
55
56 DataBindToGridView();
57 DataBindToFormView();
58 }
59
60
61
62 protected void DataBindToGridView()
63 {
64 string SqlStr = "select * from news";
65 DataSet ds = CreateDataSet(SqlStr);
66
67 DataView view = ds.Tables[0].DefaultView; //实现双向排序的代码
68 string sort = ViewState["SortOrder"].ToString() + " " + ViewState["OrderDire"].ToString();
69 view.Sort = sort;
70
71 this.GridView1.DataSource = view;
72 this.GridView1.DataBind();
73
74 this.Label4.Text = this.GridView1.PageCount.ToString(); //共有多少页
75 this.Label5.Text = (GridView1.PageIndex + 1).ToString(); //当前在第几页
76 }
77
78 protected void DataBindToFormView()
79 {
80 string SqlStr = "select * from news";
81 DataSet ds = CreateDataSet(SqlStr);
82 DataView view = ds.Tables[0].DefaultView; //实现双向排序的代码
83 string sort = ViewState["SortOrder"].ToString() + " " + ViewState["OrderDire"].ToString();
84 view.Sort = sort;
85
86 this.FormView1.DataSource = view;
87
88 this.FormView1.DataBind();
89 }
90
91
92 protected void GridView_Select(object sender, EventArgs e)
93 {
94 this.FormView1.PageIndex = this.GridView1.SelectedIndex;
95 }
96
97
98 protected void GridView1_PageIndexChanged(object sender, EventArgs e)
99 {
100 this.Label5.Text = (GridView1.PageIndex + 1).ToString(); //当前在第几页
101 }
102
103 protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
104 {
105 GridView1.PageIndex = e.NewPageIndex;//实现分页
106
107 DataBindToGridView();//否则分页按钮点两下才有反应
108
109 DataBindToFormView();
110 }
111
112
113
114 protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
115 {
116 int i;
117 //执行循环，保证每条数据都可以更新
118 for (i = -1; i < GridView1.Rows.Count; i++)
119 {
120 //首先判断是否是数据行
121 if (e.Row.RowType == DataControlRowType.DataRow)//当鼠标停留时更改背景色
122 {
123 e.Row.Attributes.Add("onmouseover", "c=this.style.backgroundColor;this.style.backgroundColor='#00A9FF'");//当鼠标移开时还原背景色
124 e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=c");
125 //为删除按钮添加确认框
126 if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate) //避免冲突
127 {
128 ((LinkButton)e.Row.Cells[4].Controls[0]).Attributes.Add("onclick", "javascript:return confirm('你确认要删除：\"" + e.Row.Cells[0].Text + "\"吗?')");
129 }
130 }
131 }
132 }
133
134
135 protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
136 {
137 GridView1.EditIndex = e.NewEditIndex;
138 this.DataBindToGridView();
139 }
140
141
142 protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
143 {
144 string SqlStr = "delete from news where news_id=" + GridView1.DataKeys[e.RowIndex].Value.ToString();
145 ExecuteSql(SqlStr);
146
147 this.DataBindToGridView();
148 DataBindToFormView();
149 }
150
151
152 protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
153 {
154 string sqlstr = "update news set title='";
155 sqlstr += ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',checkNum='";
156 sqlstr += ((TextBox)(GridView1.Rows[e.RowIndex].Cells[2].Controls[0])).Text.ToString().Trim() + "' where news_id='";
157 sqlstr += GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
158
159 ExecuteSql(sqlstr);
160
161 GridView1.EditIndex = -1;
162
163 DataBindToGridView();
164 DataBindToFormView();
165
166 }
167
168 protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
169 {
170 GridView1.EditIndex = -1;
171 this.DataBindToGridView();
172 }
173
174 protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
175 {
176 FormView1.PageIndex = GridView1.SelectedIndex + GridView1.PageIndex * GridView1.PageSize; //当GridView翻页后，页面索引值应发生相应变化
177 DataBindToFormView();
178 }
179
180 protected void Button1_Click(object sender, EventArgs e)
181 {
182 this.FormView1.ChangeMode(FormViewMode.Edit);
183 DataBindToFormView(); //否则要点击两次才会切换到编辑模式
184 }
185
186
187 protected void Button3_Click(object sender, EventArgs e)
188 {
189 string gds = ((TextBox)FormView1.FindControl("TextBox1")).Text.ToString().Trim();
190 string gds2 = ((TextBox)FormView1.FindControl("TextBox2")).Text.ToString().Trim();
191 }
192
193 protected void Button2_Click(object sender, EventArgs e)
194 {
195 ((Button)this.FormView1.FindControl("Button2")).Attributes.Add("onclick", "javascript:return confirm('你确认要更改改新闻的内容吗？')");
196 FileUpload fu = (FileUpload)this.FormView1.FindControl("FileUpload1");
197 string CurrentPath = Request.MapPath("./");
198 fu.SaveAs(CurrentPath + "\\pic\\news (" + ViewState["news_id"].ToString() + ").jpg");
199
200 string sqlstr = "update news set title='";
201 sqlstr += ((TextBox)FormView1.FindControl("TextBox1")).Text.ToString().Trim() + "',content='"; //TextBox的AutoPostBack应设为true
202 sqlstr += ((TextBox)FormView1.FindControl("TextBox2")).Text.ToString().Trim() + "',pic='";
203 sqlstr += "~/pic/news(" + ViewState["news_id"].ToString() + ").jpg' where news_id='";
204 sqlstr += this.FormView1.PageIndex.ToString() + "'";
205
206 ExecuteSql(sqlstr);
207 this.FormView1.ChangeMode(FormViewMode.ReadOnly); //更新后提交
208 DataBindToFormView();
209 }
210
211
212 protected void Button4_Click(object sender, EventArgs e)
213 {
214 int i = Convert.ToInt32(this.TextBox3.Text);
215 this.GridView1.PageIndex = i - 1; //i-1,而不是i
216 DataBindToGridView();
217 }
218
219 protected void GridView1_Sorting(object sender, GridViewSortEventArgs e) //实现正反双向排序
220 {
221 string sPage = e.SortExpression;
222 if (ViewState["SortOrder"].ToString() == sPage)
223 {
224 if (ViewState["OrderDire"].ToString() == "Desc")
225 ViewState["OrderDire"] = "ASC";
226 else
227 ViewState["OrderDire"] = "Desc";
228 }
229 else
230 {
231 ViewState["SortOrder"] = e.SortExpression;
232 }
233 DataBindToGridView();
234 DataBindToFormView();
235
236 }
237
238
239 #region DoNothing
240 protected void DoNothing(object sender, FormViewPageEventArgs e)
241 {
242
243 }
244
245 protected void DoNothing(object sender, EventArgs e)
246 {
247
248 }
249 #endregion DoNothing
250
251
252 //实现用CheckBox来控制列的隐藏或显示
253 protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
254 {
255 GridView1.Columns[1].Visible = !GridView1.Columns[1].Visible; //自动生成的"选择"列没有包括在索引内
256 Response.Write("GridView1的第4列现在的显示隐藏状态是：" + GridView1.Columns[1].Visible.ToString());
257 DataBindToFormView();
258 DataBindToGridView();
259 }
260
261 //上传新闻图片，并立刻绑定倒图像控件
262 protected void Button5_Click(object sender, EventArgs e)
263 {
264 FileUpload fu = (FileUpload)this.FormView1.FindControl("FileUpload1");
265 Image im = (Image)this.FormView1.FindControl("Image1");
266
267 if (fu.HasFile)
268 try
269 {
270 im.ImageUrl = "";
271
272 string CurrentPath = Request.MapPath("./");
273
274 //fu.SaveAs(CurrentPath + "\\pic\\news (" + ViewState["news_id"].ToString() + ").jpg");
275
276 im.ImageUrl = "~/pic/news (" + ViewState["news_id"].ToString() + ").jpg";
277
278 im.DataBind();
279 }
280 catch
281 {
282
283 }
284 }
285
286
287 }
288 }
2 using System.Collections;
3 using System.Configuration;
4 using System.Data;
5 using System.Linq;
6 using System.Web;
7 using System.Web.Security;
8 using System.Web.UI;
9 using System.Web.UI.HtmlControls;
10 using System.Web.UI.WebControls;
11 using System.Web.UI.WebControls.WebParts;
12 using System.Xml.Linq;
13 using System.Data.SqlClient;
14
15 //DetailsView 的AllowPaging属性设为true
16
17 namespace WebApplication1
18 {
19 public partial class GridView : System.Web.UI.Page
20 {
21 #region DAL
22 //静态变量
23 static string sqlConn = "Data Source=pc-200907030109\\sqlexpress;Initial Catalog=LINDERMAN;User ID=sa;Password=123456";
24 SqlConnection conn = new SqlConnection(sqlConn);
25
26 protected DataSet CreateDataSet(string sqlStr) //根据指定字符串生成数据集
27 {
28 SqlDataAdapter sda = new SqlDataAdapter(sqlStr, conn);
29 conn.Open();
30 DataSet ds = new DataSet();
31 sda.Fill(ds);
32 conn.Close();
33 return ds;
34 }
35
36 protected void ExecuteSql(string sqlStr) //执行指定SQL语句
37 {
38 SqlCommand comm = new SqlCommand(sqlStr, conn);
39 conn.Open();
40 comm.ExecuteNonQuery();
41 conn.Close();
42 }
43 #endregion DAL
44
45
46 protected void Page_Load(object sender, EventArgs e)
47 {
48 if (!IsPostBack)
49 {
50 //默认排序列为数据库中的checkNum列，升序排序
51 ViewState["SortOrder"] = "checkNum"; //必须在绑定数据前定义
52 ViewState["OrderDire"] = "DESC";
53 ViewState["news_id"] = FormView1.PageIndex.ToString();
54 }
55
56 DataBindToGridView();
57 DataBindToFormView();
58 }
59
60
61
62 protected void DataBindToGridView()
63 {
64 string SqlStr = "select * from news";
65 DataSet ds = CreateDataSet(SqlStr);
66
67 DataView view = ds.Tables[0].DefaultView; //实现双向排序的代码
68 string sort = ViewState["SortOrder"].ToString() + " " + ViewState["OrderDire"].ToString();
69 view.Sort = sort;
70
71 this.GridView1.DataSource = view;
72 this.GridView1.DataBind();
73
74 this.Label4.Text = this.GridView1.PageCount.ToString(); //共有多少页
75 this.Label5.Text = (GridView1.PageIndex + 1).ToString(); //当前在第几页
76 }
77
78 protected void DataBindToFormView()
79 {
80 string SqlStr = "select * from news";
81 DataSet ds = CreateDataSet(SqlStr);
82 DataView view = ds.Tables[0].DefaultView; //实现双向排序的代码
83 string sort = ViewState["SortOrder"].ToString() + " " + ViewState["OrderDire"].ToString();
84 view.Sort = sort;
85
86 this.FormView1.DataSource = view;
87
88 this.FormView1.DataBind();
89 }
90
91
92 protected void GridView_Select(object sender, EventArgs e)
93 {
94 this.FormView1.PageIndex = this.GridView1.SelectedIndex;
95 }
96
97
98 protected void GridView1_PageIndexChanged(object sender, EventArgs e)
99 {
100 this.Label5.Text = (GridView1.PageIndex + 1).ToString(); //当前在第几页
101 }
102
103 protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
104 {
105 GridView1.PageIndex = e.NewPageIndex;//实现分页
106
107 DataBindToGridView();//否则分页按钮点两下才有反应
108
109 DataBindToFormView();
110 }
111
112
113
114 protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
115 {
116 int i;
117 //执行循环，保证每条数据都可以更新
118 for (i = -1; i < GridView1.Rows.Count; i++)
119 {
120 //首先判断是否是数据行
121 if (e.Row.RowType == DataControlRowType.DataRow)//当鼠标停留时更改背景色
122 {
123 e.Row.Attributes.Add("onmouseover", "c=this.style.backgroundColor;this.style.backgroundColor='#00A9FF'");//当鼠标移开时还原背景色
124 e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=c");
125 //为删除按钮添加确认框
126 if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate) //避免冲突
127 {
128 ((LinkButton)e.Row.Cells[4].Controls[0]).Attributes.Add("onclick", "javascript:return confirm('你确认要删除：\"" + e.Row.Cells[0].Text + "\"吗?')");
129 }
130 }
131 }
132 }
133
134
135 protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
136 {
137 GridView1.EditIndex = e.NewEditIndex;
138 this.DataBindToGridView();
139 }
140
141
142 protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
143 {
144 string SqlStr = "delete from news where news_id=" + GridView1.DataKeys[e.RowIndex].Value.ToString();
145 ExecuteSql(SqlStr);
146
147 this.DataBindToGridView();
148 DataBindToFormView();
149 }
150
151
152 protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
153 {
154 string sqlstr = "update news set title='";
155 sqlstr += ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',checkNum='";
156 sqlstr += ((TextBox)(GridView1.Rows[e.RowIndex].Cells[2].Controls[0])).Text.ToString().Trim() + "' where news_id='";
157 sqlstr += GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
158
159 ExecuteSql(sqlstr);
160
161 GridView1.EditIndex = -1;
162
163 DataBindToGridView();
164 DataBindToFormView();
165
166 }
167
168 protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
169 {
170 GridView1.EditIndex = -1;
171 this.DataBindToGridView();
172 }
173
174 protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
175 {
176 FormView1.PageIndex = GridView1.SelectedIndex + GridView1.PageIndex * GridView1.PageSize; //当GridView翻页后，页面索引值应发生相应变化
177 DataBindToFormView();
178 }
179
180 protected void Button1_Click(object sender, EventArgs e)
181 {
182 this.FormView1.ChangeMode(FormViewMode.Edit);
183 DataBindToFormView(); //否则要点击两次才会切换到编辑模式
184 }
185
186
187 protected void Button3_Click(object sender, EventArgs e)
188 {
189 string gds = ((TextBox)FormView1.FindControl("TextBox1")).Text.ToString().Trim();
190 string gds2 = ((TextBox)FormView1.FindControl("TextBox2")).Text.ToString().Trim();
191 }
192
193 protected void Button2_Click(object sender, EventArgs e)
194 {
195 ((Button)this.FormView1.FindControl("Button2")).Attributes.Add("onclick", "javascript:return confirm('你确认要更改改新闻的内容吗？')");
196 FileUpload fu = (FileUpload)this.FormView1.FindControl("FileUpload1");
197 string CurrentPath = Request.MapPath("./");
198 fu.SaveAs(CurrentPath + "\\pic\\news (" + ViewState["news_id"].ToString() + ").jpg");
199
200 string sqlstr = "update news set title='";
201 sqlstr += ((TextBox)FormView1.FindControl("TextBox1")).Text.ToString().Trim() + "',content='"; //TextBox的AutoPostBack应设为true
202 sqlstr += ((TextBox)FormView1.FindControl("TextBox2")).Text.ToString().Trim() + "',pic='";
203 sqlstr += "~/pic/news(" + ViewState["news_id"].ToString() + ").jpg' where news_id='";
204 sqlstr += this.FormView1.PageIndex.ToString() + "'";
205
206 ExecuteSql(sqlstr);
207 this.FormView1.ChangeMode(FormViewMode.ReadOnly); //更新后提交
208 DataBindToFormView();
209 }
210
211
212 protected void Button4_Click(object sender, EventArgs e)
213 {
214 int i = Convert.ToInt32(this.TextBox3.Text);
215 this.GridView1.PageIndex = i - 1; //i-1,而不是i
216 DataBindToGridView();
217 }
218
219 protected void GridView1_Sorting(object sender, GridViewSortEventArgs e) //实现正反双向排序
220 {
221 string sPage = e.SortExpression;
222 if (ViewState["SortOrder"].ToString() == sPage)
223 {
224 if (ViewState["OrderDire"].ToString() == "Desc")
225 ViewState["OrderDire"] = "ASC";
226 else
227 ViewState["OrderDire"] = "Desc";
228 }
229 else
230 {
231 ViewState["SortOrder"] = e.SortExpression;
232 }
233 DataBindToGridView();
234 DataBindToFormView();
235
236 }
237
238
239 #region DoNothing
240 protected void DoNothing(object sender, FormViewPageEventArgs e)
241 {
242
243 }
244
245 protected void DoNothing(object sender, EventArgs e)
246 {
247
248 }
249 #endregion DoNothing
250
251
252 //实现用CheckBox来控制列的隐藏或显示
253 protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
254 {
255 GridView1.Columns[1].Visible = !GridView1.Columns[1].Visible; //自动生成的"选择"列没有包括在索引内
256 Response.Write("GridView1的第4列现在的显示隐藏状态是：" + GridView1.Columns[1].Visible.ToString());
257 DataBindToFormView();
258 DataBindToGridView();
259 }
260
261 //上传新闻图片，并立刻绑定倒图像控件
262 protected void Button5_Click(object sender, EventArgs e)
263 {
264 FileUpload fu = (FileUpload)this.FormView1.FindControl("FileUpload1");
265 Image im = (Image)this.FormView1.FindControl("Image1");
266
267 if (fu.HasFile)
268 try
269 {
270 im.ImageUrl = "";
271
272 string CurrentPath = Request.MapPath("./");
273
274 //fu.SaveAs(CurrentPath + "\\pic\\news (" + ViewState["news_id"].ToString() + ").jpg");
275
276 im.ImageUrl = "~/pic/news (" + ViewState["news_id"].ToString() + ").jpg";
277
278 im.DataBind();
279 }
280 catch
281 {
282
283 }
284 }
285
286
287 }
288 }
