根据项目需要，提供自定义服务器控件之 GridViewControl，提供数据为空时的自定义显示。

[DefaultProperty("EnableEmptyContentRender")]
[ToolboxData("<{0}:GridViewControl runat=server></{0}:GridViewControl>")]
public class GridViewControl : System.Web.UI.WebControls.GridView
{
    /// <summary>
    /// 是否数据为空时显示标题行
    /// </summary>
    private bool _enableEmptyContentRender = true;
    /// <summary>
    /// 是否数据为空时显示标题行
    /// </summary>
    [Bindable(true)]
    [Category("Appearance")]
    [DefaultValue("")]
    [Localizable(true)]
    public bool EnableEmptyContentRender
    {
        set { _enableEmptyContentRender = value; }
        get { return _enableEmptyContentRender; }
    }
    /// <summary>
    /// 是否数据为空时显示标题行
    /// </summary>
    private string _EmptyDataCellCssClass;
    /// <summary>
    /// 为空时信息单元格样式类
    /// </summary>
    [Bindable(true)]
    [Category("Appearance")]
    [DefaultValue("")]
    [Localizable(true)]
    public string EmptyDataCellCssClass
    {
        set { _EmptyDataCellCssClass = value; }
        get { return _EmptyDataCellCssClass; }
    }
    /// <summary>
    /// 为空时输出内容
    /// </summary>
    /// <param name="writer"></param>
    protected virtual void RenderEmptyContent(HtmlTextWriter writer)
    {
        //Create Header Table
        Table tblHeader = new Table();
        //Copy All Property
        tblHeader.CssClass = this.CssClass;
        tblHeader.GridLines = this.GridLines;
        tblHeader.BorderStyle = this.BorderStyle;
        tblHeader.BorderWidth = this.BorderWidth;
        tblHeader.CellPadding = this.CellPadding;
        tblHeader.CellSpacing = this.CellSpacing;
        tblHeader.HorizontalAlign = this.HorizontalAlign;
        tblHeader.Width = this.Width;
        tblHeader.CopyBaseAttributes(this);

TableRow rowHeader = new TableRow();
        tblHeader.Rows.Add(rowHeader);
        rowHeader.CssClass = "TableHeader";
        //Generate Table Header
        foreach (DataControlField f in this.Columns)
        {
            TableCell cell = new TableCell();
            cell.Text = f.HeaderText;
            rowHeader.Cells.Add(cell);
        }
        TableRow rowBody = new TableRow();
        tblHeader.Rows.Add(rowBody);
        TableCell cellBody = new TableCell();
        cellBody.CssClass = this._EmptyDataCellCssClass;
        if (this.EmptyDataTemplate != null)
            //the second row， use the template
            this.EmptyDataTemplate.InstantiateIn(cellBody);
        else
            //the second row， use the EmptyDataText
            cellBody.Text = this.EmptyDataText;

cellBody.HorizontalAlign = HorizontalAlign.Left;
        cellBody.ColumnSpan = this.Columns.Count;
        rowBody.Cells.Add(cellBody);
        tblHeader.RenderControl(writer);
    }

protected override void Render(HtmlTextWriter writer)
    {
        if (_enableEmptyContentRender && (this.Rows.Count == 0 || this.Rows[0].RowType == DataControlRowType.EmptyDataRow))
            RenderEmptyContent(writer);
        else
            base.Render(writer);
    }
}