15.GridView合并表頭多重表頭無錯完美版(以合并3列3行舉例)
效果圖:
背景代碼:
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;
using System.Drawing;
public partial class _Default : System.Web.UI.Page
{
SqlConnection sqlcon;
SqlCommand sqlcom;
string strCon = "Data Source=(local);Database=北風貿易;Uid=sa;Pwd=sa";
protected void Page_Load(object sender, EventArgs e)
if (!IsPostBack)
bind();
}
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
GridView1.EditIndex = e.NewEditIndex;
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
sqlcon = new SqlConnection(strCon);
string sqlstr = "update 飛狐工作室 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 ×××号碼='"
+ GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
sqlcom=new SqlCommand(sqlstr,sqlcon);
sqlcon.Open();
sqlcom.ExecuteNonQuery();
sqlcon.Close();
GridView1.EditIndex = -1;
protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
public void bind()
string sqlstr = "select top 10 * from 飛狐工作室";
SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
DataSet myds = new DataSet();
myda.Fill(myds, "飛狐工作室");
GridView1.DataSource = myds;
GridView1.DataKeyNames = new string[] { "×××号碼" };
GridView1.DataBind();
//這裡就是解決方案
protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
switch (e.Row.RowType)
case DataControlRowType.Header:
//第一行表頭
TableCellCollection tcHeader = e.Row.Cells;
tcHeader.Clear();
tcHeader.Add(new TableHeaderCell());
tcHeader[0].Attributes.Add("rowspan", "3"); //跨Row
tcHeader[0].Attributes.Add("bgcolor", "white");
tcHeader[0].Text = "";
//tcHeader[1].Attributes.Add("bgcolor", "Red");
tcHeader[1].Attributes.Add("colspan", "6"); //跨Column
tcHeader[1].Text = "全部資訊</th></tr><tr>";
//第二行表頭
tcHeader[2].Attributes.Add("bgcolor", "DarkSeaGreen");
tcHeader[2].Text = "×××号碼";
tcHeader[3].Attributes.Add("bgcolor", "LightSteelBlue");
tcHeader[3].Attributes.Add("colspan", "2");
tcHeader[3].Text = "基本資訊";
tcHeader[4].Attributes.Add("bgcolor", "DarkSeaGreen");
tcHeader[4].Text = "福利";
tcHeader[5].Attributes.Add("bgcolor", "LightSteelBlue");
tcHeader[5].Attributes.Add("colspan", "2");
tcHeader[5].Text = "聯系方式</th></tr><tr>";
//第三行表頭
tcHeader[6].Attributes.Add("bgcolor", "Khaki");
tcHeader[6].Text = "×××号碼";
tcHeader[7].Attributes.Add("bgcolor", "Khaki");
tcHeader[7].Text = "姓名";
tcHeader[8].Attributes.Add("bgcolor", "Khaki");
tcHeader[8].Text = "出生日期";
tcHeader[9].Attributes.Add("bgcolor", "Khaki");
tcHeader[9].Text = "薪水";
tcHeader[10].Attributes.Add("bgcolor", "Khaki");
tcHeader[10].Text = "家庭住址";
tcHeader[11].Attributes.Add("bgcolor", "Khaki");
tcHeader[11].Text = "郵政編碼";
break;
前台:
<!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合并多重表頭表頭 清清月兒http://blog.csdn.net/21aspnet </title>
</head>
<body >
<form id="form1" runat="server">
<div >
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="3" 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:CommandField HeaderText="編輯" ShowEditButton="True" />
<asp:BoundField DataField="×××号碼" HeaderText="編号" ReadOnly="True" />
<asp:BoundField DataField="姓名" HeaderText="姓名" />
<asp:BoundField DataField="出生日期" HeaderText="郵政編碼" />
<asp:BoundField DataField="起薪" HeaderText="起薪" />
<asp:BoundField DataField="家庭住址" HeaderText="家庭住址" />
<asp:BoundField DataField="郵政編碼" HeaderText="郵政編碼" />
</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" />
</asp:GridView>
</div>
</form>
</body>
</html>
16.GridView突出顯示某一單元格(例如金額低于多少,分數不及格等)
解決方案:主要是綁定後過濾
for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
DataRowView mydrv = myds.Tables["飛狐工作室"].DefaultView[i];
string score = Convert.ToString(mydrv["起薪"]);
if (Convert.ToDouble(score) < 34297.00)//大家這裡根據具體情況設定可能ToInt32等等
GridView1.Rows[i].Cells[4].BackColor = System.Drawing.Color.Red;
全部背景代碼:
public partial class Default7 : System.Web.UI.Page
sqlcom = new SqlCommand(sqlstr, sqlcon);
前台代碼:
<head id="Head1" runat="server">
<title>GridView突出顯示某一單元格 清清月兒http://blog.csdn.net/21aspnet </title>
OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" >
<asp:BoundField DataField="起薪" HeaderText="起薪" DataFormatString="{0:C}" HtmlEncode="false"/>
17.GridView加入自動求和求平均值小計
解決方案:
private double sum = 0;//取指定列的資料和,你要根據具體情況對待可能你要處理的是int
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
if (e.Row.RowIndex >= 0)
sum += Convert.ToDouble(e.Row.Cells[6].Text);
else if (e.Row.RowType == DataControlRowType.Footer)
e.Row.Cells[5].Text = "總薪水為:";
e.Row.Cells[6].Text = sum.ToString();
e.Row.Cells[3].Text = "平均薪水為:";
e.Row.Cells[4].Text = ((int)(sum / GridView1.Rows.Count)).ToString();
背景全部代碼:
string sqlstr = "select top 5 * from 飛狐工作室";
private double sum = 0;//取指定列的資料和
前台:唯一的花頭就是設定ShowFooter="True" ,否則預設表頭為隐藏的!
OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound" ShowFooter="True" >
18.GridView資料導入Excel/Excel資料讀入GridView
頁面增加一個按鈕,單擊事件添加如下方法:
protected void Button1_Click(object sender, EventArgs e)
Export("application/ms-excel", "學生成績報表.xls");
private void Export(string FileType, string FileName)
Response.Charset = "GB2312";
Response.ContentEncoding = System.Text.Encoding.UTF7;
Response.AppendHeader("Content-Disposition", "p_w_upload;filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString());
Response.ContentType = FileType;
this.EnableViewState = false;
StringWriter tw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(tw);
GridView1.RenderControl(hw);
Response.Write(tw.ToString());
Response.End();
//如果沒有下面方法會報錯類型“GridView”的控件“GridView1”必須放在具有 runat=server 的窗體标記内
public override void VerifyRenderingInServerForm(Control control)
還有由于是檔案操作是以要引入名稱空間IO和Text
using System.IO;
using System.Text;
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="3"
BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" >
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="導出" />
讀取Excel資料的代碼:這個很簡單的
private DataSet CreateDataSource()
string strCon;
strCon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Server.MapPath("excel.xls") + "; Extended Properties=Excel 8.0;";
OleDbConnection olecon = new OleDbConnection(strCon);
OleDbDataAdapter myda = new OleDbDataAdapter("Select * FROM [Sheet1$]", strCon);
myda.Fill(myds);
return myds;
GridView1.DataSource = CreateDataSource();
由于時間關系,這個文章先到此。有時間再寫,其實還有很多技巧,不過我覺得如果能融彙貫通應該可以舉一反三。
<asp :BoundField DataField="CreationDate"
DataFormatString="{0:M-dd-yyyy}"
HeaderText="CreationDate" />
主要是由于htmlencode屬性預設設定為true,已防止XSS攻擊,安全起見而用的,是以,可以有以下兩種方法解決
1、
<asp :GridView ID="GridView1" runat="server">
<columns>
HtmlEncode="false"
</columns>
</asp>
将htmlencode設定為false即可
另外的解決方法為,使用模版列
<asp :GridView ID="GridView3" runat="server" >
<asp :TemplateField HeaderText="CreationDate" >
<edititemtemplate>
<asp :Label ID="Label1" runat="server"
Text='<%# Eval("CreationDate", "{0:M-dd-yyyy}") %>'>
</edititemtemplate>
<itemtemplate>
Text='<%# Bind("CreationDate", "{0:M-dd-yyyy}") %>'>
</itemtemplate>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="×××号碼"
DataSourceID="SqlDataSource1" AllowSorting="True" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" CellPadding="3" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound">
<asp:BoundField DataField="×××号碼" HeaderText="×××号碼" ReadOnly="True" SortExpression="×××号碼" />
<asp:BoundField DataField="姓名" HeaderText="姓名" SortExpression="姓名" />
<asp:BoundField DataField="郵政編碼" HeaderText="郵政編碼" SortExpression="郵政編碼" />
<asp:BoundField DataField="出生日期" HeaderText="出生日期" SortExpression="出生日期" />
<asp:BoundField DataField="起薪" HeaderText="起薪" SortExpression="起薪" />
<PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:北風貿易ConnectionString1 %>"
SelectCommand="Select top 5 [出生日期], [起薪], [×××号碼], [姓名], [家庭住址], [郵政編碼] FROM [飛狐工作室]" DataSourceMode="DataReader"></asp:SqlDataSource>
附錄-常用格式化公式:
{0:C} 貨币;
{0:D4}由0填充的4個字元寬的字段中顯示整數;
{0:000.0}四舍五入小數點保留第幾位有效數字;
{0:N2}小數點保留2位有效數字;{0:N2}% 小數點保留2位有效數字加百分号;
{0:D}長日期;{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實作用“...”代替超長字元串:
解決方法:資料綁定後過濾每一行即可
DataRowView mydrv;
string gIntro;
if (GridView1.PageIndex == 0)
mydrv = myds.Tables["飛狐工作室"].DefaultView[i];//表名
gIntro = Convert.ToString(mydrv["家庭住址"]);//所要處理的字段
GridView1.Rows[i].Cells[3].Text = SubStr(gIntro, 2);
else
mydrv = myds.Tables["飛狐工作室"].DefaultView[i + (5 * GridView1.PageIndex)];
gIntro = Convert.ToString(mydrv["家庭住址"]);
調用的方法:
public string SubStr(string sString, int nLeng)
if (sString.Length <= nLeng)
return sString;
string sNewStr = sString.Substring(0, nLeng);
sNewStr = sNewStr + "...";
return sNewStr;
ViewState["SortOrder"] = "×××号碼";
ViewState["OrderDire"] = "ASC";
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
string sqlstr = "delete from 飛狐工作室 where ×××号碼='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
sqlcom = new SqlCommand(sqlstr,sqlcon);
mydrv = myds.Tables["飛狐工作室"].DefaultView[i];
//如果是綁定資料行
if (e.Row.RowType == DataControlRowType.DataRow)
////滑鼠經過時,行背景色變
//e.Row.Attributes.Add(" "this.style.backgroundColor='#E6F5FA'");
////滑鼠移出時,行背景色變
//e.Row.Attributes.Add(" "this.style.backgroundColor='#FFFFFF'");
////當有編輯列時,避免出錯,要加的RowState判斷
//if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate)
//{
// ((LinkButton)e.Row.Cells[6].Controls[0]).Attributes.Add(" "javascript:return confirm('你确認要删除:\"" + e.Row.Cells[1].Text + "\"嗎?')");
//}
if (e.Row.RowIndex != -1)
int id = e.Row.RowIndex + 1;
e.Row.Cells[0].Text = id.ToString();
11.GridView一般換行與強制換行:
首先設定<asp:BoundField DataField="家庭住址" HeaderText="家庭住址" ItemStyle-Width="100" />
gridview裡有一列綁定的資料很長,顯示的時候在一行裡面顯示,頁面拉得很寬。
原因是連續英文段為一個整體導緻的,在RowDataBound中添加上了一句e.Row.Cells[2].Style.Add("word-break", "break-all")就可以。
如果要給所有的列增加此屬性:
//正常換行
GridView1.Attributes.Add("style", "word-break:keep-all;word-wrap:normal");
//下面這行是自動換行
GridView1.Attributes.Add("style", "word-break:break-all;word-wrap:break-word");
bind();//調用資料綁定即可
總之:善用CSS的word-break:break-all;word-wrap:break-word屬性即可,這個屬性是通用的對于頑固的南換行問題都可以解決,不局限于GridView。
12.GridView顯示隐藏某一列:
本方案為月兒獨創,不同于網上其他方式,我覺得用一個CheckBox更人性化,這樣可以隐藏不必要的列,讓使用者自己選擇需要出現的列,在處理多列時這是一個很好的解決方案!
圖1-開始
圖2-點選顯示的CheckBox後
GridView1.Columns[3].Visible = false;//一開始隐藏
CheckBox1.Checked = false;//如果不這樣後面的代碼會把他True
輕按兩下CheckBox1,在CheckedChanged方法裡寫上代碼,最後代碼如下:
protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
GridView1.Columns[3].Visible=! GridView1.Columns[3].Visible;
Response.Write("GridView1的第4列現在的顯示隐藏狀态是:"+GridView1.Columns[3].Visible.ToString());
注意:CheckBox1的AutoPostBack要True!
背景全部代碼如下:
GridView1.Columns[3].Visible = false;
CheckBox1.Checked = false;
<title>GridView顯示隐藏列 清清月兒http://blog.csdn.net/21aspnet </title>
<body style="font-size=12px">
<div>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="3" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
<asp:BoundField DataField="姓名" HeaderText="使用者姓名" />
<asp:CommandField HeaderText="選擇" ShowSelectButton="True" />
<asp:CommandField HeaderText="删除" ShowDeleteButton="True" />
<asp:CheckBox ID="CheckBox1" runat="server" AutoPostBack="True" Font-Size="12px"
OnCheckedChanged="CheckBox1_CheckedChanged" Text="顯示隐藏家庭住址" /></div>
13.GridView彈出新頁面/彈出制定大小位置新視窗:
方案一:簡單的方法,新視窗不固定大小
<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>
DataNavigateUrlFields是連結的字段名,DataNavigateUrlFormatString是路徑。
方案二:精确控制彈出視窗大小位置
<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>
使用的是結合javascript的window.open方法,關于window.open的參數網上有很多文章,本站也有許多參考
彈出視窗大全 http://blog.csdn.net/21aspnet/archive/2004/10/25/150231.aspx 即可!
14.GridView固定表頭(不用javascript隻用CSS!,很好用):
代碼:
<title>GridView固定表頭 清清月兒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>
<div style="overflow-y: scroll; height: 200px;width:300px" id="dvBody">
<HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" CssClass="Freezing"/>
用法:CSS設如上的樣式,HeaderStyle加CssClass="Freezing,套住GridView的Div設定高度寬度 <div style="overflow-y: scroll; height: 200px;width:200px" >