[英]Asp.net dynamic gridview buttons
我有一個用SQL數據填充的gridview,我想將按鈕/鏈接按鈕動態添加到其列中。
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);
}
外觀上可以正常工作,但是單擊它可以進行回發,並且所做的更改會丟失。 按鈕不見了。
我在哪里可以重新創建它們以便它們持久存在?
您可以將命令字段或模板字段用於按鈕,以下是圖像按鈕的示例:
<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>
如果單擊“單擊我”按鈕,請使用以下步驟繞過網格的綁定
將您的OnRowBound函數代碼更改為:
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);
}
}
在網格視圖加載之前將以下檢查添加到您的Page_Load中
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)
{
}
}
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