c# - GridView 编辑/更新事件在 1 次单击后未触发

Question

我有一个 GridView，它有正常的编辑/更新按钮。但是，我的 GV RowUpdating、RowEditing 和 RowCancelingEdit 只需单击 2 次即可工作。如果我点击一次，它就不起作用:(

这是我填充所有内容的代码:

public partial class Testing : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
         string getEntity = Request.QueryString["EntityID"];
         int getIntEntity = Int16.Parse(getEntity);
         using (OISLinq2SqlVs1DataContext dt = new OISLinq2SqlVs1DataContext())
         {
             var tr = from r in dt.Users
                      join s in dt.Entities on r.Entity_ID equals s.ID
                      where s.ID == getIntEntity
                      select new
                      {
                          s.Name,
                          r.FirstName,
                          r.LastName,
                          s.Email,
                          //r.Email,
                          r.UserID,
                          r.Pwd,
                          s.Company,
                          s.Description,
                          s.Phone,
                          s.Fax,
                          s.WebSite
                          
                      };

             gvShowRegistration.DataSource = tr;
             gvShowRegistration.DataBind();
         }
    }

    protected void gvShowRegistration_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        OISLinq2SqlVs1DataContext dt = new OISLinq2SqlVs1DataContext();
    }

    protected void gvShowRegistration_RowEditing(object sender, GridViewEditEventArgs e)
    {
        gvShowRegistration.EditIndex = e.NewEditIndex;
    }

    protected void gvShowRegistration_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
    {
        gvShowRegistration.EditIndex = -1;
    }

这是我在代码后面的全部代码。我在这里做错了什么？

更新:

这是我的 GridView:

<asp:GridView ID="gvShowRegistration" runat="server" 
     Height="204px" Width="678px" 
    OnRowEditing = "gvShowRegistration_RowEditing" 
    OnRowUpdating = "gvShowRegistration_RowUpdating" 
    OnRowCancelingEdit = "gvShowRegistration_RowCancelingEdit" CssClass="menu">
    <Columns>
    <asp:CommandField HeaderText="Edit" ShowEditButton="True" ShowHeader="True" ShowSelectButton="True" />
    
    </Columns>
 </asp:GridView>

Answer 1

仅在未回发时绑定(bind)您的 GV。

protected void Page_Load(object sender, EventArgs e)
{
    if(!Page.IsPostBack){
        //You GV Databinding code
    }
}