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Gridview记录为空时显示表头,和没有记录的提示

 
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用一个类~
C# code
<!-- Code highlighting produced by Actipro CodeHighlighter (freeware) http://www.CodeHighlighter.com/ -->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;


namespace MTS.CommonComponent
{
/// <summary>
/// Gridview绑定的数据记录为空时显示Gridview的表头,并显示没有记录的提示
/// </summary>
public class GridViewNull
{

//当Gridview数据为空时显示的信息
private static string EmptyText = "暂无数据";

public GridViewNull()
{

}



/// <summary>
/// 防止PostBack后Gridview不能显示
/// </summary>
/// <param name="gridview"></param>
public static void ResetGridView(GridView gridview)
{
//如果数据为空则重新构造Gridview
if (gridview.Rows.Count == 1 && gridview.Rows[0].Cells[0].Text == EmptyText)
{
int columnCount = gridview.Columns.Count;
gridview.Rows[
0].Cells.Clear();
gridview.Rows[
0].Cells.Add(new TableCell());
gridview.Rows[
0].Cells[0].ColumnSpan = columnCount;
gridview.Rows[
0].Cells[0].Text = EmptyText;
gridview.Rows[
0].Cells[0].Style.Add("text-align", "center");
}

}



/// <summary>
/// 绑定数据到GridView,当表格数据为空时显示表头
/// </summary>
/// <param name="gridview"></param>
/// <param name="table"></param>
public static void GridViewDataBind(GridView gridview, DataTable table, string EmptyText)
{
//记录为空重新构造Gridview
if (table.Rows.Count == 0)
{

table
= table.Clone();
table.Rows.Add(table.NewRow());
gridview.DataSource
= table;
gridview.DataBind();
int columnCount = table.Columns.Count;
gridview.Rows[
0].Cells.Clear();
gridview.Rows[
0].Cells.Add(new TableCell());
gridview.Rows[
0].Cells[0].ColumnSpan = columnCount;
gridview.Rows[
0].Cells[0].Text = EmptyText;
gridview.Rows[
0].Cells[0].Style.Add("text-align", "center");
}

else
{
//数据不为空直接绑定
gridview.DataSource = table;
gridview.DataBind();
}

//重新绑定取消选择
gridview.SelectedIndex = -1;
}

}

}

在调用的时候~这样做

if (dt.Rows.Count > 0)
{
// 当有数据时候,进行这样的帮顶
GV_DelDoc.DataSource = dt;
GV_DelDoc.DataBind();
divDoArea.Visible = true;
}

else
{ // 当没哟数据的时候,自己帮顶一个空的字段
DataTable dtNull = new DataTable();
dtNull.Columns.Add();
dtNull.Columns.Add("FileName");
dtNull.Columns.Add("Filesize");
dtNull.Columns.Add("FileType");
dtNull.Columns.Add("AddTime");
GridViewNull.GridViewDataBind(GV_DelDoc, dtNull, "暂无数据!");

divDoArea.Visible = false;
}
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