Asp.net动态网格视图按钮
本文关键字:视图 按钮 网格 动态 net Asp | 更新日期: 2023-09-27 18:13:56
我有一个gridview,从SQL填充的数据,我想动态地添加按钮/链接按钮到它的列。
protected void gridview_RowDataBound(object sender, GridViewRowEventArgs e)
{
Button button = new Button();
button.ID = "row" + e.Row.RowIndex;
button.Text = "click me";
button.Click += new EventHandler(Unnamed_Click);
e.Row.Cells[1].Controls.Add(button);
}
视觉效果很好,但是当单击它时,它会回发,并且更改会丢失。按钮不见了。
我可以在哪里重新创建它们以使它们持久存在?
按钮可以使用命令字段或模板字段,下面是图像按钮的示例:
<asp:CommandField ShowEditButton="true" EditImageUrl="~/images/edit.png" ButtonType="Image" ItemStyle-Width="20px" HeaderStyle-Width="20px" AccessibleHeaderText="Edit">
<HeaderStyle Width="20px" />
<ItemStyle Width="20px" />
</asp:CommandField>
Or
<asp:TemplateField>
<ItemTemplate>
<asp:ImageButton ID="btnEdit" runat="server" CommandName="Edit"
ImageUrl="~/images/edit.png" ToolTip="Click to Edit></asp:ImageButton>
</ItemTemplate>
</asp:TemplateField>
如果点击"点击我"按钮,请使用以下步骤绕过网格绑定
将OnRowBound函数代码更改为:
protected void gridview_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.DataItemIndex != -1)
{
Button button = new Button();
button.ID = "gridview1row" + e.Row.RowIndex;
button.UseSubmitBehavior = false;
button.Text = "click me";
button.Click += new EventHandler(Unnamed_Click);
e.Row.Cells[1].Controls.Add(button);
}
}
在Grid View Load之前将以下检查添加到Page_Load
protected void Page_Load(object sender, EventArgs e)
{
try
{
if ( Request.Params["__EventTarget"] == null || !Request.Params["__EventTarget"].Contains("gridview1row"))
{
using (SqlConnection connection = new SqlConnection(GetConnectionString()))
{
using (SqlCommand command =
new SqlCommand("SELECT TOP 100 * FROM dbo.TableName", connection))
{
DataSet ds = new DataSet();
SqlDataAdapter da = new SqlDataAdapter();
da.SelectCommand = command;
da.Fill(ds);
GridView1.DataSource = ds;
GridView1.DataBind();
}
}
}
}
catch (Exception ex)
{
}
}