在gridview中动态添加的TemplateField列的事件处理 [英] Event handling for dynamically added TemplateField column in gridview

问题描述

我具有使用ITemplate接口和InstantiateIn()方法动态添加的templatefield的gridview控件，如下所示.

Hi,

I have gridview control with dynamically added templatefield using ITemplate interface and InstantiateIn() method which is as follows.

public class MyTemplate:ITemplate
   {
       #region ITemplate Members
       public void InstantiateIn(Control container)
       {
           //EventHandlerClass MyEventClass = new EventHandlerClass();
           LinkButton link = new LinkButton();
           link.ID="lnk";
           link.CommandName="Update";
           link.EnableViewState = true;
           link.Text="Update";
           link.ToolTip="Click to Update Details";
           //link.Click+=new DelegateClickEvent(MyEventClass.Show);

           container.Controls.Add(link);
       }
       #endregion
   }

我可以成功地将itemtemplate链接按钮添加到gridview，但是我被困在linkbutton(ItemTemplate)列的hadle事件上.即使无法触发GridView事件GridView_RowCommand()，即单击链接按钮事件后也不会触发.

请同样帮我.

预先谢谢您.

I am successfully able to add itemtemplate link button to gridview but I am stuck to hadle Events for linkbutton(ItemTemplate) column. Even unable to fire GridView event GridView_RowCommand() i.e after clicking link button event doesn''t get fired.

Please help me on the same.

Thank you in advance.

推荐答案

Hello Shashank，

您需要将click事件起泡到其命名容器，即GridView:

Hello Shashank,

you need to bubble up the click event to its naming container i.e. GridView:

public class MyTemplateField : Control, ITemplate
    {
        Button btnCommand;
        public string CommandName { get; set; }
        public MyTemplateField()
        {
            btnCommand = new Button();
            btnCommand.ID = "btnInTemplateField";
            btnCommand.Text = "Template Field''s button";
            btnCommand.Click += new EventHandler(btn_Click);
            CommandName = "Update";
        }
        void btn_Click(object sender, EventArgs e)
        {
            //Create command event arguments
            CommandEventArgs commandEventArgs = new CommandEventArgs(this.CommandName, btnCommand);
            //Bubble the command event to the container of MyTemplateField i.e. GridView
            RaiseBubbleEvent(btnCommand, commandEventArgs);
        }
        public void InstantiateIn(Control container)
        {
            container.Controls.Add(btnCommand);
        }
    }

希望这会有所帮助.

谢谢，
Hemant

Hope this will help.

Thanks,
Hemant

@ Hemant-Sharma很好.创建动态控件后，ASP.Net不会保留它们.除非您要求将每个帖子都返回到Page_Load()或其他地方.例如

@Hemant-Sharma is wright. ASP.Net doesn''t retain dynamically created controls once there are created. Unless you call for each post back on Page_Load() or somewhere else. For example

protected void Page_Load(object sender, EventArgs e)
{
    LinkButton lb = new LinkButton();
    lb.Text = "Click me"
    lb.Click += new EventHandler(clickMe);
    this.Panel1.Controls.Add(lb);
}
private void clickMe(object sender, EventArgs e)
{

}

每次点击链接按钮都会引发事件，最终会回发信息.如果不这样做，它就不会保留它的事件.

我希望这会给你一个线索.

The link button will raise it''s event whenever click, which eventually calls a post back. Without doing this it won''t retain it''s event.

I hope this will give you a clue.

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