******** 接    上 ********
GridView实现自动编号
GridView实现自定义时间货币等字符串格式
GridView实现用“...”代替超长字符串
GridView一般换行与强制换行
GridView显示隐藏某一列
GridView弹出新页面/弹出新窗口
GridView固定表头(不用javascript只用CSS,2行代码,很好用)


9.GridView实现自动编号:

效果图:

实现方法:
双击GridView的OnRowDataBound事件;
在后台的GridView1_RowDataBound()方法添加代码,最后代码如下所示:

 protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    
{
        
//如果是绑定数据行 //清清月儿http://blog.csdn.net/21aspnet 
        if (e.Row.RowType == DataControlRowType.DataRow)
        
{
            
////鼠标经过时,行背景色变 
            //e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#E6F5FA'");
            ////鼠标移出时,行背景色变 
            //e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#FFFFFF'");

            
////当有编辑列时,避免出错,要加的RowState判断 
            //if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate)
            
//{
            
//    ((LinkButton)e.Row.Cells[6].Controls[0]).Attributes.Add("onclick", "javascript:return confirm('你确认要删除:\"" + e.Row.Cells[1].Text + "\"吗?')");
            
//}

        }

        
if (e.Row.RowIndex != -1)
        
{
            
int id = e.Row.RowIndex + 1;
            e.Row.Cells[
0].Text = id.ToString();
        }


    }


注意这时最好把前台的第一列的表头该为“编号”,因为以前的第一列被“吃掉”了。
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="3" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
                        OnRowUpdating
="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound">
                        
<FooterStyle BackColor="White" ForeColor="#000066" />
                        
<Columns>
                            
<asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
                            
<asp:BoundField DataField="姓名" HeaderText="用户姓名" />
                            
<asp:BoundField DataField="员工性别" HeaderText="性别" />
                            
<asp:BoundField DataField="家庭住址" HeaderText="家庭住址" />
                            
<asp:CommandField HeaderText="选择" ShowSelectButton="True" />
                            
<asp:CommandField HeaderText="编辑" ShowEditButton="True" />
                            
<asp:CommandField HeaderText="删除" ShowDeleteButton="True" />
                        
</Columns>
                        
<RowStyle ForeColor="#000066" />
                        
<SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                        
<PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
                        
<HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                    
</asp:GridView>

10.GridView实现自定义时间货币等字符串格式:

效果图:
图1-未格式化前

图2-格式化后

解决方法:

在asp.net 2.0中,如果要在绑定列中显示比如日期格式等,如果用下面的方法是显示不了的

<asp :BoundField DataField="CreationDate"
DataFormatString="{0:M-dd-yyyy}"
HeaderText="CreationDate" />

主要是由于htmlencode属性默认设置为true,已防止XSS攻击,安全起见而用的,所以,可以有以下两种方法解决

1、

<asp :GridView ID="GridView1" runat="server">
<columns>
<asp :BoundField DataField="CreationDate" 
DataFormatString
="{0:M-dd-yyyy}" 
HtmlEncode
="false"
HeaderText
="CreationDate" />
</columns>
</asp>


将htmlencode设置为false即可

另外的解决方法为,使用模版列

<asp :GridView ID="GridView3" runat="server" >
<columns>
<asp :TemplateField HeaderText="CreationDate" >
<edititemtemplate>
<asp :Label ID="Label1" runat="server" 
Text
='<%# Eval("CreationDate", "{0:M-dd-yyyy}") %>'>
</asp>
</edititemtemplate>
<itemtemplate>
<asp :Label ID="Label1" runat="server" 
Text
=’<%# Bind("CreationDate", "{0:M-dd-yyyy}") %>'>
</asp>
</itemtemplate>
</asp>
</columns>
</asp>

附录-常用格式化公式:
{0:C}  货币;
{0:D4}由0填充的4个字符宽的字段中显示整数;
{0:000.0}四舍五入小数点保留第几位有效数字;
{0:N2}小数点保留2位有效数字;{0:N2}%   小数点保留2位有效数字加百分号;
{0:D}长日期;{0:d}短日期;{0:yy-MM-dd}   例如07-3-25;;{0:yyyy-MM-dd}  例如2007-3-25

 11.GridView实现用“...”代替超长字符串:

效果图:

解决方法:数据绑定后过滤每一行即可

for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
        
{
            DataRowView mydrv;
            
string gIntro;
            
if (GridView1.PageIndex == 0)
            
{
                mydrv 
= myds.Tables["飞狐工作室"].DefaultView[i];//表名
                gIntro = Convert.ToString(mydrv["家庭住址"]);//所要处理的字段
                GridView1.Rows[i].Cells[3].Text = SubStr(gIntro, 2);
            }

            
else
            
{
                mydrv 
= myds.Tables["飞狐工作室"].DefaultView[i + (5 * GridView1.PageIndex)];
                gIntro 
= Convert.ToString(mydrv["家庭住址"]);
                GridView1.Rows[i].Cells[
3].Text = SubStr(gIntro, 2);
            }

        }
 

//调用的方法:

    
public string SubStr(string sString, int nLeng)
    
{
        
if (sString.Length <= nLeng)
        
{
            
return sString;
        }

        
string sNewStr = sString.Substring(0, nLeng);
        sNewStr 
= sNewStr + "";
        
return sNewStr;
    }


后台全部代码:
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page 
{
    SqlConnection sqlcon;
    SqlCommand sqlcom;
    
string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";
    
protected void Page_Load(object sender, EventArgs e)
    
{
        
if (!IsPostBack)
        
{
            ViewState[
"SortOrder"= "身份证号码";
            ViewState[
"OrderDire"= "ASC";
            bind();
        }

    }

    
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
    
{
        GridView1.EditIndex 
= e.NewEditIndex;
        bind();
    }

    
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
    
{
        
string sqlstr = "delete from 飞狐工作室 where 身份证号码='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
        sqlcon 
= new SqlConnection(strCon);
        sqlcom 
= new SqlCommand(sqlstr,sqlcon);
        sqlcon.Open();
        sqlcom.ExecuteNonQuery();
        sqlcon.Close();
        bind();
    }

    
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
    
{
        sqlcon 
= new SqlConnection(strCon);
        
string sqlstr = "update 飞狐工作室 set 姓名='"
            
+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',家庭住址='"
            
+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where 身份证号码='" 
            
+ GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
        sqlcom
=new SqlCommand(sqlstr,sqlcon);
        sqlcon.Open();
        sqlcom.ExecuteNonQuery();
        sqlcon.Close();
        GridView1.EditIndex 
= -1;
        bind();
    }

    
protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
    
{
        GridView1.EditIndex 
= -1;
        bind();
    }

    
public void bind()
    
{
        
string sqlstr = "select top 5 * from 飞狐工作室";
        sqlcon 
= new SqlConnection(strCon);
        SqlDataAdapter myda 
= new SqlDataAdapter(sqlstr, sqlcon);
        DataSet myds 
= new DataSet();
        sqlcon.Open();
        myda.Fill(myds, 
"飞狐工作室");
        GridView1.DataSource 
= myds;
        GridView1.DataKeyNames 
= new string[] "身份证号码" };
        GridView1.DataBind();
        
for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
        
{
            DataRowView mydrv;
            
string gIntro;
            
if (GridView1.PageIndex == 0)
            
{
                mydrv 
= myds.Tables["飞狐工作室"].DefaultView[i];
                gIntro 
= Convert.ToString(mydrv["家庭住址"]);
                GridView1.Rows[i].Cells[
3].Text = SubStr(gIntro, 2);
            }

            
else
            
{
                mydrv 
= myds.Tables["飞狐工作室"].DefaultView[i + (5 * GridView1.PageIndex)];
                gIntro 
= Convert.ToString(mydrv["家庭住址"]);
                GridView1.Rows[i].Cells[
3].Text = SubStr(gIntro, 2);
            }

        }

        
        sqlcon.Close();
    }

    
public string SubStr(string sString, int nLeng)
    
{
        
if (sString.Length <= nLeng)
        
{
            
return sString;
        }

        
string sNewStr = sString.Substring(0, nLeng);
        sNewStr 
= sNewStr + "";
        
return sNewStr;
    }

    
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    
{
        
//如果是绑定数据行 
        if (e.Row.RowType == DataControlRowType.DataRow)
        
{
            
////鼠标经过时,行背景色变 
            //e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#E6F5FA'");
            ////鼠标移出时,行背景色变 
            //e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#FFFFFF'");

            
////当有编辑列时,避免出错,要加的RowState判断 
            //if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate)
            
//{
            
//    ((LinkButton)e.Row.Cells[6].Controls[0]).Attributes.Add("onclick", "javascript:return confirm('你确认要删除:\"" + e.Row.Cells[1].Text + "\"吗?')");
            
//}

        }

        
if (e.Row.RowIndex != -1)
        
{
            
int id = e.Row.RowIndex + 1;
            e.Row.Cells[
0].Text = id.ToString();
        }


    }

}



11.GridView一般换行与强制换行:

效果图:

首先设置<asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  ItemStyle-Width="100" />
gridview里有一列绑定的数据很长,显示的时候在一行里面显示,页面拉得很宽。
原因是连续英文段为一个整体导致的,在RowDataBound中添加上了一句e.Row.Cells[2].Style.Add("word-break", "break-all")就可以。

如果要给所有的列增加此属性:
 protected void Page_Load(object sender, EventArgs e)
    {
        //正常换行
        GridView1.Attributes.Add("style", "word-break:keep-all;word-wrap:normal");
        //下面这行是自动换行
        GridView1.Attributes.Add("style", "word-break:break-all;word-wrap:break-word");
        if (!IsPostBack)
        {
             bind();//调用数据绑定即可
        }
    }
总之:善用CSS的word-break:break-all;word-wrap:break-word属性即可,这个属性是通用的对于顽固的南换行问题都可以解决,不局限于GridView。

 12.GridView显示隐藏某一列:
本方案为月儿独创,不同于网上其他方式,我觉得用一个CheckBox更人性化,这样可以隐藏不必要的列,让用户自己选择需要出现的列,在处理多列时这是一个很好的解决方案!

效果图:
图1-开始

图2-点击显示的CheckBox后

解决方案:

public void bind()
    
{
        
string sqlstr = "select top 5 * from 飞狐工作室";
        sqlcon 
= new SqlConnection(strCon);
        SqlDataAdapter myda 
= new SqlDataAdapter(sqlstr, sqlcon);
        DataSet myds 
= new DataSet();
        sqlcon.Open();
        myda.Fill(myds, 
"飞狐工作室");
        GridView1.DataSource 
= myds;
        GridView1.DataKeyNames 
= new string[] "身份证号码" };
        GridView1.DataBind();
        sqlcon.Close();
        GridView1.Columns[
3].Visible = false;//一开始隐藏
        CheckBox1.Checked = false;//如果不这样后面的代码会把他True
    }


//双击CheckBox1,在CheckedChanged方法里写上代码,最后代码如下:
protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
    
{
         GridView1.Columns[
3].Visible=! GridView1.Columns[3].Visible;
         Response.Write(
"GridView1的第4列现在的显示隐藏状态是:"+GridView1.Columns[3].Visible.ToString());
    }


//注意:CheckBox1的AutoPostBack要True!
后台全部代码如下:
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page 
{
    SqlConnection sqlcon;
    SqlCommand sqlcom; 
    
string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";
    
protected void Page_Load(object sender, EventArgs e)
    
{
        
if (!IsPostBack)
        
{
            ViewState[
"SortOrder"= "身份证号码";
            ViewState[
"OrderDire"= "ASC";
            bind();
                   }

    }

    
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
    
{
        GridView1.EditIndex 
= e.NewEditIndex;
        bind();
    }

    
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
    
{
        
string sqlstr = "delete from 飞狐工作室 where 身份证号码='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
        sqlcon 
= new SqlConnection(strCon);
        sqlcom 
= new SqlCommand(sqlstr,sqlcon);
        sqlcon.Open();
        sqlcom.ExecuteNonQuery();
        sqlcon.Close();
        bind();
    }

    
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
    
{
        sqlcon 
= new SqlConnection(strCon);
        
string sqlstr = "update 飞狐工作室 set 姓名='"
            
+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',家庭住址='"
            
+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where 身份证号码='" 
            
+ GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
        sqlcom
=new SqlCommand(sqlstr,sqlcon);
        sqlcon.Open();
        sqlcom.ExecuteNonQuery();
        sqlcon.Close();
        GridView1.EditIndex 
= -1;
        bind();
    }

    
protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
    
{
        GridView1.EditIndex 
= -1;
        bind();
    }

    
public void bind()
    
{
        
string sqlstr = "select top 5 * from 飞狐工作室";
        sqlcon 
= new SqlConnection(strCon);
        SqlDataAdapter myda 
= new SqlDataAdapter(sqlstr, sqlcon);
        DataSet myds 
= new DataSet();
        sqlcon.Open();
        myda.Fill(myds, 
"飞狐工作室");
        GridView1.DataSource 
= myds;
        GridView1.DataKeyNames 
= new string[] "身份证号码" };
        GridView1.DataBind();
        sqlcon.Close();
        GridView1.Columns[
3].Visible = false;
        CheckBox1.Checked 
= false;
    }

    
protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
    
{
         GridView1.Columns[
3].Visible=! GridView1.Columns[3].Visible;
         Response.Write(
"GridView1的第4列现在的显示隐藏状态是:"+GridView1.Columns[3].Visible.ToString());
    }

}


前台代码:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    
<title>GridView显示隐藏列 清清月儿http://blog.csdn.net/21aspnet </title>
</head>
<body style="font-size=12px">
    
<form id="form1" runat="server">
    
<div>
                   
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="3" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
                        OnRowUpdating
="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px"  >
                        
<FooterStyle BackColor="White" ForeColor="#000066" />
                        
<Columns>
                            
<asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
                            
<asp:BoundField DataField="姓名" HeaderText="用户姓名" />
                            
<asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />
                            
<asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />
                            
<asp:CommandField HeaderText="选择" ShowSelectButton="True" />
                            
<asp:CommandField HeaderText="编辑" ShowEditButton="True" />
                            
<asp:CommandField HeaderText="删除" ShowDeleteButton="True" />
                        
</Columns>
                        
<RowStyle ForeColor="#000066" />
                        
<SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                        
<PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
                        
<HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                    
</asp:GridView>
        
<asp:CheckBox ID="CheckBox1" runat="server" AutoPostBack="True" Font-Size="12px"
            OnCheckedChanged
="CheckBox1_CheckedChanged" Text="显示隐藏家庭住址" /></div>
    
</form>
</body>
</html>

13.GridView弹出新页面/弹出制定大小位置新窗口:

效果图:

方案一:简单的方法,新窗口不固定大小

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="3" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
                        OnRowUpdating
="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px"  >
                        
<FooterStyle BackColor="White" ForeColor="#000066" />
                        
<Columns>
                            
<asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
                            
<asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />
                            
<asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />
                            
<asp:HyperLinkField HeaderText="姓名" Text="姓名" DataNavigateUrlFields="姓名" DataNavigateUrlFormatString="Default6.aspx?GoodsID={0}" Target="mainframe" NavigateUrl="~/Default6.aspx" DataTextField="姓名" >
                    
</asp:HyperLinkField>
                            
<asp:CommandField HeaderText="选择" ShowSelectButton="True" />
                            
<asp:CommandField HeaderText="编辑" ShowEditButton="True" />
                            
<asp:CommandField HeaderText="删除" ShowDeleteButton="True" />
                        
</Columns>
                        
<RowStyle ForeColor="#000066" />
                        
<SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                        
<PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
                        
<HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                    
</asp:GridView>
DataNavigateUrlFields是链接的字段名,DataNavigateUrlFormatString是路径。

方案二:精确控制弹出窗口大小位置

<asp:HyperLinkColumn DataNavigateUrlField="EmployeeID" DataNavigateUrlFormatString="javascript:varwin=window.open('detail.aspx?ID={0}',null,'width=300,height=200');window.Close();"
       DataTextField
="LastName" HeaderText="LastName"></asp:HyperLinkColumn>

使用的是结合javascript的window.open方法,关于window.open的参数网上有很多帖子,有许多参考
弹出窗口大全 http://blog.csdn.net/21aspnet/archive/2004/10/25/150231.aspx   即可!

  14.GridView固定表头(不用javascript只用CSS!,很好用)

效果图:

代码:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>GridView固定表头 清清月儿http://blog.csdn.net/21aspnet </title>
        <style>
.Freezing
   {
   
   position:relative ;
   table-layout:fixed;
   top:expression(this.offsetParent.scrollTop);  
   z-index: 10;
   }

.Freezing th{text-overflow:ellipsis;overflow:hidden;white-space: nowrap;padding:2px;}
</style>
</head>
<body style="font-size=12px">
    <form id="form1" runat="server">
    <div style="overflow-y: scroll; height: 200px;width:300px" id="dvBody">
                   <asp:GridView ID="GridView1" runat="server"    AutoGenerateColumns="False" CellPadding="3" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
                        OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowCreated="GridView1_RowCreated"  >
                        <FooterStyle BackColor="White" ForeColor="#000066" />
                        <Columns>
                            <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
                            <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />
                            <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"  />
                            <asp:BoundField DataField="姓名" HeaderText="姓名"  />
                           
                        </Columns>
                        <RowStyle ForeColor="#000066" />
                        <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                        <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left"  CssClass="ms-formlabel DataGridFixedHeader"/>
                        <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" CssClass="Freezing"/>
                    </asp:GridView>
        </div>

    </form>
</body>
</html>

用法:CSS设如上的样式,HeaderStyle加CssClass="Freezing,套住GridView的Div设置高度宽度 <div style="overflow-y: scroll; height: 200px;width:200px" >


 posted on 2007-11-10 16:40  思绪随风  阅读(336)  评论(0编辑  收藏  举报