.net Gridview空数据的时候显示表头

1.页面设置gridview ShowHeaderWhenEmpty="True"

2.参考原文：https://blog.csdn.net/xfblue/article/details/3861242

/// <summary>
/// GridviewControl 的摘要说明
/// </summary>
public class GridviewControl
{
    //当Gridview数据为空时显示的信息
    private static string EmptyText = "没有记录";

    public GridviewControl()
    {

    }

    ///<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)
    {
        //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 = "没有记录";
            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;
    }
}

 

/// <summary>/// GridviewControl 的摘要说明/// </summary>public class GridviewControl{//当Gridview数据为空时显示的信息private static string EmptyText = "没有记录";
public GridviewControl(){
}
///<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Gridviewif (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){//记录为空重新构造Gridviewif (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 = "没有记录";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;}}