删除技巧
private void dgShow_DeleteCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
{
if(dgShow.Items.Count==1)
{
if(dgShow.CurrentPageIndex!=0)
dgShow.CurrentPageIndex = dgShow.CurrentPageIndex-1;
}
string strSql = "delete from tbStudentinfo where studentid="+e.Item.Cells[0].Text+"";
ExecuteSql(strSql);
BindData();
}
改变控件宽度
private void dgShow_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
{
if (e.Item.ItemType == ListItemType.EditItem)
{
for (int i=0;i<e.Item.Cells.Count;i++)
{
if(e.Item.Cells[i].Controls.Count>0)
{
try
{
TextBox t =(TextBox)e.Item.Cells[i].Controls[0];
t.Width=130;
}
catch(Exception ee)
{
}
}
}
}
}
绑定技巧
<EditItemTemplate>
<asp:RadioButton id=cbSex runat="server" Text="男" Checked='<%# DataBinder.Eval(Container, "DataItem.Sex") %>' GroupName="Sex">
</asp:RadioButton>
<asp:RadioButton id=RadioButton4 runat="server" Text="女" Checked='<%# !(bool)DataBinder.Eval(Container, "DataItem.Sex") %>' GroupName="Sex">
</asp:RadioButton>
</EditItemTemplate>
排序
AllowPaging="True">
private void dgShow_PageIndexChanged(object source, System.Web.UI.WebControls.DataGridPageChangedEventArgs e)
{
dgShow.CurrentPageIndex = e.NewPageIndex;
BindData();
}
excel 导出
private void btnMIME_Click(object sender, System.EventArgs e)
{
Response.ContentType = "application/vnd.ms-excel";
Response.Charset = "";
this.EnableViewState = false;
System.IO.StringWriter sw = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter(sw);
int nCur = dgShow.CurrentPageIndex;
int nSize = dgShow.PageSize;
dgShow.AllowPaging = false;
BindData();
dgShow.Columns[7].Visible =false;
dgShow.RenderControl(hw);
dgShow.Columns[7].Visible =true;
//以下恢复分页
dgShow.AllowPaging = true;
dgShow.CurrentPageIndex = nCur;
dgShow.PageSize = nSize;
BindData();
Response.Write(sw.ToString());
Response.End();
}
全选
<asp:TemplateColumn HeaderText="选择">
<HeaderTemplate>
<asp:CheckBox id="cbAll" runat="server" OnCheckedChanged="CheckAll" Text="全选" AutoPostBack="True"></asp:CheckBox>
</HeaderTemplate>
<ItemTemplate>
<asp:CheckBox id="cbSelect" runat="server" AutoPostBack="True"></asp:CheckBox>
</ItemTemplate>
</asp:TemplateColumn>
btnDelete.Attributes.Add("onclick", "return confirm('您真的要删除所选项吗？');");
private void btnDelete_Click(object sender, System.EventArgs e)
{
foreach(DataGridItem dgi in dgShow.Items)
{
CheckBox cb = (CheckBox)dgi.FindControl("cbSelect");
if(cb.Checked)
{
//以下执行删除操作
int nID = int.Parse(dgi.Cells[0].Text);
string strSql = "delete from tbStudentinfo where studentid="+nID;
ExecuteSql(strSql);
}
}
dgShow.CurrentPageIndex = 0;
BindData();
}
删除确认
private void dgShow_ItemCreated(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
{
switch(e.Item.ItemType)
{
case ListItemType.Item:
case ListItemType.EditItem:
case ListItemType.AlternatingItem:
Button myDeleteButton = (Button)e.Item.FindControl("btnDelete");
myDeleteButton.Text = "删除此行";
myDeleteButton.Attributes.Add("onclick", "return confirm('您真的要删除第 " + e.Item.ItemIndex.ToString() + " 行吗？');");
break;
}
}
private void dgShow_ItemCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
{
if(e.CommandName=="UserDelete")
dgShow_DeleteCommand(source,e);
}
private void BindData()
{
string strCon = System.Configuration.ConfigurationSettings.AppSettings["DSN"];
SqlConnection con = new SqlConnection(strCon);
SqlDataAdapter da = new SqlDataAdapter("Select * from tbStudentinfo",con);
DataSet ds = new DataSet();
da.Fill(ds,"studentinfo");
dgShow.DataSource = ds.Tables["studentinfo"].DefaultView;
dgShow.DataBind();
foreach(DataGridItem dgi in dgShow.Items)
{
//以下绑定非编辑状态下拉列表
DropDownList ddI = (DropDownList)dgi.FindControl("ddlSexI");
if(ddI!=null)
{
bool bSex = (bool)ds.Tables["studentinfo"].Rows[dgi.ItemIndex]["Sex"];
if(bSex)
ddI.SelectedIndex = 0;
else
ddI.SelectedIndex = 1;
}
//以下绑定编辑状态下拉列表
DropDownList ddE = (DropDownList)dgi.FindControl("ddlSexE");
if(ddE!=null)
{
bool bSex = (bool)ds.Tables["studentinfo"].Rows[dgi.ItemIndex]["Sex"];
if(bSex)
ddE.SelectedIndex = 0;
else
ddE.SelectedIndex = 1;
}
}
}
private void dgShow_UpdateCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
{
string strStudentID = e.Item.Cells[0].Text;//处于非编辑状态
string strName = ((TextBox)(e.Item.Cells[1].Controls[0])).Text;//处于编辑状态
string strPass =((TextBox)(e.Item.Cells[2].Controls[0])).Text;
string strSex = ((DropDownList)(e.Item.FindControl("ddlSexE"))).SelectedItem.Value;
string strBirthday =((TextBox)(e.Item.Cells[4].Controls[0])).Text;
string strEmail =((TextBox)(e.Item.Cells[5].Controls[0])).Text;
string strSql = "update tbStudentinfo set StudentName='"+strName+"',StudentPass='"+strPass+"'";
strSql +=",Sex="+strSex+",Birthday='"+strBirthday+"',Email='"+strEmail+"' where studentid="+strStudentID+"";
ExecuteSql(strSql);
dgShow.EditItemIndex = -1;
BindData();
}
统计
<SelectedItemStyle ForeColor="GhostWhite" BackColor="DarkSlateBlue"></SelectedItemStyle>
<AlternatingItemStyle BackColor="PaleGoldenrod"></AlternatingItemStyle>
<HeaderStyle Font-Bold="True" BackColor="Tan"></HeaderStyle>
<FooterStyle BackColor="Tan"></FooterStyle>
<Columns>
<asp:BoundColumn DataField="StudentID" ReadOnly="True" HeaderText="学生ID"></asp:BoundColumn>
<asp:BoundColumn DataField="StudentName" HeaderText="学生姓名"></asp:BoundColumn>
<asp:BoundColumn DataField="StudentPass" HeaderText="密码"></asp:BoundColumn>
<asp:BoundColumn DataField="Sex" HeaderText="性别"></asp:BoundColumn>
<asp:BoundColumn DataField="Birthday" HeaderText="生日" DataFormatString="{0:yyyy-M-d}"></asp:BoundColumn>
<asp:BoundColumn DataField="Email" HeaderText="邮件地址"></asp:BoundColumn>
<asp:BoundColumn DataField="Score" HeaderText="分数"></asp:BoundColumn>
</Columns>
<PagerStyle HorizontalAlign="Center" ForeColor="DarkSlateBlue" BackColor="PaleGoldenrod"></PagerStyle>
</asp:DataGrid>
private void BindData()
{
string strCon = System.Configuration.ConfigurationSettings.AppSettings["DSN"];
SqlConnection con = new SqlConnection(strCon);
SqlDataAdapter da = new SqlDataAdapter("Select * from tbStudentinfo",con);
DataSet ds = new DataSet();
da.Fill(ds,"studentinfo");
dgShow.DataSource = ds.Tables["studentinfo"].DefaultView;
dgShow.DataBind();
//以下作分数和的统计
int count=0;
for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
{
count += int.Parse(ds.Tables[0].Rows[i]["Score"].ToString());
}
int nAv = count/ds.Tables[0].Rows.Count;
foreach(DataGridItem dgi in dgShow.Controls[0].Controls)
{
if (dgi.ItemType == ListItemType.Footer)
dgi.Cells[6].Text = "平均："+nAv.ToString();
}
}
DataGrid使用心得(附大量代码)
1. 为 DataGrid 控件设计样式
在<asp:datagrid id="DataGrid1" runat="server">之后添加如下代码
<FooterStyle ForeColor="Black" BackColor="#CCCCCC"></FooterStyle>
<SelectedItemStyle Font-Bold="True" ForeColor="White" BackColor="#008A8C"></SelectedItemStyle>
<AlternatingItemStyle BackColor="Gainsboro"></AlternatingItemStyle>
<ItemStyle ForeColor="Black" BackColor="#EEEEEE"></ItemStyle>
<HeaderStyle Font-Bold="True" ForeColor="White" BackColor="#000084"></HeaderStyle>
说明:
(1) 在每个标签内主要是 ForeColor BackColor Font-Bold 这几个属性值
2. 为 DataGrid 控件添加绑定列
<asp:BoundColumn DataField="" ReadOnly="True" HeaderText=""></asp:BoundColumn>
说明:
(1) 在标签内的基本属性是 DataField / HeaderText
(2) DataFormatString 用于 获取或设置指定列中各项的显示格式的字符串。
形式为 { A: Bxx }。例如，格式化字符串 {0:F2} 将显示带两位小数的定点数。
其中A值只能设置为 0，因为每个单元格中只有一个值。
冒号后的字符（常规示例中为 B）指定值的显示格式
C 以货币格式显示数值。
D 以十进制格式显示数值。
E 以科学记数法（指数）格式显示数值。
F 以固定格式显示数值。
G 以常规格式显示数值。
N 以数字格式显示数值。
X 以十六进制格式显示数值。
(3) Visible 获取或设置一个值，该值指示此列在 DataGrid 控件中是否可见。
(4) ReadOnly 设置些列是否只读,若是只读的话,则不能修改.
(5) SortExpression 获取或设置选择进行排序的列时传递到 OnSortCommand 方法的字段或表达式的名称。
3. 为 DataGrid 控件添加模板列
<asp:TemplateColumn HeaderText="类别">
<ItemTemplate>
<asp:Label Text='<%# DataBinder.Eval(Container.DataItem, "actorclassname") %>' runat="server" ID="Label1"/>
</ItemTemplate>
<EditItemTemplate>
<select name="sltclassname">
<% = ActorClass.GetParentClass(0) %>
</select>
</EditItemTemplate>
</asp:TemplateColumn>
说明:
(1) 基本框架是
<asp:TemplateColumn HeaderText="类别">
<ItemTemplate></ItemTemplate>
</asp:TemplateColumn>
(2) 全面的模板列
<asp:TemplateColumn>
<HeaderTemplate>
<b> Tax </b>
</HeaderTemplate>
<ItemTemplate>
<asp:Label
Text='<%# DataBinder.Eval(Container.DataItem, "Tax") %>'
runat="server"/>
</ItemTemplate>
<EditItemTemplate>
<asp:CheckBox
Text="Taxable"
runat="server"/>
</EditItemTemplate>
<FooterTemplate>
<asp:HyperLink id="HyperLink1"
Text="Microsoft"
NavigateUrl="http://www.microsoft.com"
runat="server"/>
</FooterTemplate>
</asp:TemplateColumn>
(3) 为布尔型列应用模板列
<asp:TemplateColumn>
<ItemTemplate>
<asp:Label
Text='<%# DataBinder.Eval(Container.DataItem, "Tax") %>'
runat="server"/>
</ItemTemplate>
<EditItemTemplate>
<asp:CheckBox
Text="Taxable"
runat="server"/>
</EditItemTemplate>
</asp:TemplateColumn>
在正常状态,用 Label控件显示
在编辑状态,用 CheckBox控件显示
(4) 为枚举类型列应用模板列,如业务地区(全网/广东/云南等等)
<asp:TemplateColumn HeaderText="处理方式">
<ItemTemplate>
<asp:Label ID="lbStatus">
<%# DataBinder.Eval(Container, "DataItem.DealWith") %>
</asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:DropDownList id="dpStatus2" runat="server" DataTextField="status">
<asp:ListItem Value="Log">Log(日志)</asp:ListItem>
<asp:ListItem Value="SendSms">SendSms(短信)</asp:ListItem>
</asp:DropDownList>
</EditItemTemplate>
</asp:TemplateColumn>
在正常状态,用 Label控件显示
在编辑状态,用 DropDownList控件显示
(5) 为长字符串应用模板列,如一篇文章的内容
还未做过
4. 为 DataGrid 控件添加按钮列
<asp:ButtonColumn
HeaderText="Remove from cart"
ButtonType="PushButton"
Text="Remove"
CommandName="RemoveFromCart" />
(1) 要使用按钮列,必须在 DataGrid 控件中添加 OnItemCommand 属性,并为该事件添加处理方法.
(2) 模板列可以实现按钮列能实现的任何功能.
5. 为 DataGrid 控件添加编辑列
<asp:EditCommandColumn ButtonType="LinkButton" UpdateText="更新" HeaderText="编辑" CancelText="取消" EditText="编辑"></asp:EditCommandColumn>
(1) ButtonType 有两个值: LinkButton 超级链接样式按钮的列 | PushButton 普通按钮的列。
6. 为 DataGrid 控件添加超链接列
<asp:HyperLinkColumn Text="添加子类" DataNavigateUrlField="ActorclassID" DataNavigateUrlFormatString="addActorClass.aspx?classID={0}"></asp:HyperLinkColumn>
(1) 为每一行设置相同的文字及跳转的URL地址
设置 Text 和 NavigateUrl 属性，则列中的所有超级链接将共享同一标题和 URL
(2) 为每一行设置不同的文字及不同跳转的URL地址
A. 用 DataTextField 设置数据源字段,若还想在原数据的基础上加工一下(如字段值为300,想显示为300元)
则再设置 DataTextFormatString 字段
B. 用DataNavigateUrlField 及 DataNavigateUrlFormatString 来设置URL地址
用DataTextField = "money" DataTextFormatString = "{0}元"
C. 举例
DataNavigateUrlField="ActorclassID" DataNavigateUrlFormatString="addActorClass.aspx?classID={0}"
7. 为 DataGrid 控件添加"编辑"代码
在 DataGrid 标签中加入
OnUpdateCommand="DataGrid1_Update" OnCancelCommand="DataGrid1_Cancel" OnEditCommand="DataGrid1_Edit"代码
在codeBehind页面加入如下代码
///响应编辑按钮
public void DataGrid1_Edit(Object sender, DataGridCommandEventArgs e)
{
DataGrid1.EditItemIndex = e.Item.ItemIndex;
if (Request.QueryString.Get("classID") != null)
Common.BindData(DataGrid1,Common.GetSource("select * from ActorClass where parentID=" + Request.QueryString.Get("classID") + " order by depth,orderID desc"));
else
Common.BindData(DataGrid1,Common.GetSource("select * from ActorClass where depth=1 order by depth,orderID desc"));
}
///响应取消按钮
public void DataGrid1_Cancel(Object sender, DataGridCommandEventArgs e)
{
DataGrid1.EditItemIndex = -1;
if (Request.QueryString.Get("classID") != null)
Common.BindData(DataGrid1,Common.GetSource("select * from ActorClass where parentID=" + Request.QueryString.Get("classID") + " order by depth,orderID desc"));
else
Common.BindData(DataGrid1,Common.GetSource("select * from ActorClass where depth=1 order by depth,orderID desc"));
}
///响应更新按钮
public void DataGrid1_Update(Object sender, DataGridCommandEventArgs e)
{
TextBox ClassNameText = (TextBox)e.Item.Cells[1].Controls[0];
string className = ClassNameText.Text;
int classID = Int32.Parse((e.Item.Cells[0].Text).ToString());
TextBox orderID2 = (TextBox)e.Item.Cells[5].Controls[0];
int orderID = Int32.Parse(orderID2.Text);
ActorClass.ModifyActorClass(className,classID,orderID);
DataGrid1.EditItemIndex = -1;
if (Request.QueryString.Get("classID") != null)
Common.BindData(DataGrid1,Common.GetSource("select * from ActorClass where parentID=" + Request.QueryString.Get("classID") + " order by depth,orderID desc"));
else
Common.BindData(DataGrid1,Common.GetSource("select * from ActorClass where depth=1 order by depth,orderID desc"));
}
说明
(1) DataGrid 事件处理程序的格式
MethodName(Object sender, DataGridCommandEventArgs e)
(2) 更新按钮的说明
A. 获取编辑状态中的文本框
TextBox ClassNameText = (TextBox)e.Item.Cells[1].Controls[0];
string className = ClassNameText.Text;
B. 获取编辑状态中的下拉列表框
方法一
int classID;
classID = Int32.Parse(Request.Form.Get("sltclassname"));
方法二
DropDownList bbb = (DropDownList)e.Item.Cells[10].FindControl("dpStatus2");
string ddpValue = bbb.SelectedValue
C. 获取编辑状态中的复选框
bool boolEnabled = ((CheckBox)e.Item.FindControl("chk_enabled")).Checked;
String str2;
if (boolEnabled)
{
str2="1";
}
else
{
str2="0";
}
赋值给 str2 ,原因是插入到数据库的布尔型值只能是 1 或者 0
D. 获取编辑状态中的文本值,即该列是只读的.
string storyID = (e.Item.Cells[0].Text).ToString();
8. 为 DataGrid 控件添加分页事件
在 DataGrid 控件标签中加入如下代码
OnPageIndexChanged="DataGrid1_PageIndexChanged"
在后台中加入如下代码
/// <summary>
/// 响应分页事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
public void DataGrid1_Page(Object sender, DataGridPageChangedEventArgs e)
{
DataGrid1.CurrentPageIndex = e.NewPageIndex;
DataBind();
}
9. 为 DataGrid 控件添加绑定事件,即在 DataGrid绑定时发生的事件处理
一般用些事件来,做一些页面上的效果.如更改背景色,文本框大小等.
OnItemDataBound="DataGrid1_ItemDataBound"
/// <summary>
/// 响应DataGrid绑定事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
public void DataGrid1_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
{
if (e.Item.ItemType == ListItemType.Item)
{
e.Item.Attributes.Add("onmouseover","this.style.backgroundColor='#c8dafa'");
e.Item.Attributes.Add("onmouseout","this.style.backgroundColor='white'");
}
else if (e.Item.ItemType == ListItemType.AlternatingItem)
{
e.Item.Attributes.Add("onmouseover","this.style.backgroundColor='#c8dafa'");
e.Item.Attributes.Add("onmouseout","this.style.backgroundColor='#f6f6f6'");
}
}
10. 为 DataGrid 控件添加接钮处理事件程序
在 DataGrid 控件标签中加入如下代码
OnItemCommand="ItemsGrid_Command"
在后台中加入如下代码
public void ItemsGrid_Command(Object sender, DataGridCommandEventArgs e)
{
switch(((LinkButton)e.CommandSource).CommandName)
{
case "Delete":
int classID = Int32.Parse((e.Item.Cells[0].Text).ToString());
ActorClass.DeleteActorClass(classID);
if (Request.QueryString.Get("classID") != null)
Common.BindData(DataGrid1,Common.GetSource("select * from ActorClass where parentID=" + Request.QueryString.Get("classID") + " order by depth,orderID desc"));
else
Common.BindData(DataGrid1,Common.GetSource("select * from ActorClass where depth=1 order by depth,orderID desc"));
break;
// Add other cases here, if there are multiple ButtonColumns in
// the DataGrid control.
case "hidden":
int actorID = Int32.Parse((e.Item.Cells[0].Text).ToString());
ActorClass.HiddenActorClass(actorID);
if (Request.QueryString.Get("classID") != null)
Common.BindData(DataGrid1,Common.GetSource("select * from ActorClass where parentID=" + Request.QueryString.Get("classID") + " order by depth,orderID desc"));
else
Common.BindData(DataGrid1,Common.GetSource("select * from ActorClass where depth=1 order by depth,orderID desc"));
break;
case "MoveUp":
int actorclassID = Int32.Parse((e.Item.Cells[0].Text).ToString());
string orderID = (e.Item.Cells[5].Text).ToString();
ActorClass.MoveUp(orderID,actorclassID);
if (Request.QueryString.Get("classID") != null)
Common.BindData(DataGrid1,Common.GetSource("select * from ActorClass where parentID=" + Request.QueryString.Get("classID") + " order by depth,orderID desc"));
else
Common.BindData(DataGrid1,Common.GetSource("select * from ActorClass where depth=1 order by depth,orderID desc"));
break;
case "MoveDown":
actorclassID = Int32.Parse((e.Item.Cells[0].Text).ToString());
orderID = (e.Item.Cells[5].Text).ToString();
ActorClass.MoveDown(orderID,actorclassID);
if (Request.QueryString.Get("classID") != null)
Common.BindData(DataGrid1,Common.GetSource("select * from ActorClass where parentID=" + Request.QueryString.Get("classID") + " order by depth,orderID desc"));
else
Common.BindData(DataGrid1,Common.GetSource("select * from ActorClass where depth=1 order by orderID"));
break;
default:
// Do nothing.
break;
}
}
11. 为 DataGrid添加模板列,但是内容根据字段值来显示"链接",还是文本
以下三个都是,根据字段列不同,而显示内容及显示控件不同的处理代码.
<asp:TemplateColumn HeaderText="子菜单">
<ItemTemplate>
<%# ActorClassManage.hasLeaf(DataBinder.Eval(Container.DataItem,"ActorClassID").ToString(),DataBinder.Eval(Container.DataItem,"child").ToString())%>
</ItemTemplate>
</asp:TemplateColumn>
public static string hasLeaf(string id,string child)
{
string lRtn = "";
if (Int32.Parse(child) > 0)
lRtn="<a href='Actorclassmanage.aspx?classID="+id+"'><font color=blue>子菜单(" + child + ")</font></a>";
else
lRtn = "无子菜单";
return lRtn;
}
<asp:TemplateColumn HeaderText="属性">
<ItemTemplate>
<asp:LinkButton Text='<%# IsHidden(DataBinder.Eval(Container.DataItem,"ActorClassID").ToString(),(bool)DataBinder.Eval(Container.DataItem,"Enabled")) %>' runat="server" CommandName="hidden" ID="Linkbutton1"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateColumn>
public static string IsHidden(string id,bool enabled)
{
string lRtn = "";
if (enabled == true)
{
lRtn = "[显示]";
}
else
{
lRtn = "隐藏";
}
return lRtn;
}
public static void Sort(string actorclassID, string orderID)
{
string temp = "";
if (Int32.Parse(BgPicManage.GetMaxCode("actorclass","orderID")) == Int32.Parse(orderID))
{
temp += "<ipnut type='submit' value='向下移'>";
}
if (Int32.Parse(orderID) == 0)
{
temp += "<ipnut type='submit' value='向上移'>";
}
}
12. DataGrid 控件自定义分页代码
将下列代码放于包含<DataGrid>的form中去,
<p style="FONT-SIZE:9pt" align="center">
<asp:label id="lblPageCount" runat="server"></asp:label>
<asp:label id="lblCurrentIndex" runat="server"></asp:label>
<asp:linkbutton id="btnFirst" onclick="PagerButtonClick" runat="server" Font-Name="verdana"
Font-size="8pt" ForeColor="navy" CommandArgument="0"></asp:linkbutton>
<asp:linkbutton id="btnPrev" onclick="PagerButtonClick" runat="server" Font-Name="verdana"
Font-size="8pt" ForeColor="navy" CommandArgument="prev"></asp:linkbutton>
<asp:linkbutton id="btnNext" onclick="PagerButtonClick" runat="server" Font-Name="verdana"
Font-size="8pt" ForeColor="navy" CommandArgument="next"></asp:linkbutton>
<asp:linkbutton id="btnLast" onclick="PagerButtonClick" runat="server" Font-Name="verdana"
Font-size="8pt" ForeColor="navy" CommandArgument="last"></asp:linkbutton>
</p>
后台代码
private void Page_Load(object sender, System.EventArgs e)
{
// 在此处放置用户代码以初始化页面
btnFirst.Text = "最首页";
btnPrev.Text = "前一页";
btnNext.Text = "下一页";
btnLast.Text = "最后页";
//绑定数据源
if (!Page.IsPostBack)
{
OpenDatabase();
BindGrid();
}
}
//用于显示"第几页,总*页"
private void ShowStats()
{
lblCurrentIndex.Text = "第 " + (MyDataGrid.CurrentPageIndex + 1).ToString() + " 页";
lblPageCount.Text = "总共 " + MyDataGrid.PageCount.ToString() + " 页";
}
//响应分页按钮
public void PagerButtonClick(object sender, EventArgs e)
{
string arg = ((LinkButton)sender).CommandArgument.ToString();
switch(arg)
{
case "next":
if (MyDataGrid.CurrentPageIndex < (MyDataGrid.PageCount - 1))
{
MyDataGrid.CurrentPageIndex += 1;
}
break;
case "prev":
if (MyDataGrid.CurrentPageIndex > 0)
{
MyDataGrid.CurrentPageIndex -= 1;
}
break;
case "last":
MyDataGrid.CurrentPageIndex = (MyDataGrid.PageCount - 1);
break;
default:
MyDataGrid.CurrentPageIndex = System.Convert.ToInt32(arg);
break;
}
BindGrid();
ShowStats();
}
