如何动态地向gridview添加控件？

Question

我有两列，如何动态添加一个或两个控件...每次创建一行时..

我还想通过迭代动态创建列。

我如何实现这一目标？

Answer 1

在要添加控件的列中放置PlaceHolder控件。然后在GridView的RowDataBound事件中添加对PlaceHolder的控件

修改1

aspx中的网格列将如下所示： -

<Columns>
<asp:TemplateField HeaderText="Column1">
    <ItemTemplate>
        <asp:PlaceHolder runat='server' ID="column1PlaceHolder"></asp:PlaceHolder>
    </ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Column2">
    <ItemTemplate>
        <asp:PlaceHolder runat='server' ID="column2PlaceHolder"></asp:PlaceHolder>
    </ItemTemplate>
</asp:TemplateField>
</Columns>

您的RowDataBound事件将如下所示： -

public void GridView_RowDataBound(Object sender, GridViewRowEventArgs e)
{
    if (column1NeedsControls)
    {
        PlaceHolder placeHolder = e.Row.FindControl("column1PlaceHolder") as PlaceHolder;
        TextBox TextBox1 = new TextBox();
        placeHolder.Controls.Add(TextBox1);
    }

    if (column2NeedsControls)
    {
        PlaceHolder placeHolder = e.Row.FindControl("column2PlaceHolder") as PlaceHolder;
        TextBox TextBox1 = new TextBox();
        placeHolder.Controls.Add(TextBox1);
    }
}