动态添加点击到gridview中的图像按钮 [英] Add click to imagebutton inside gridview dynamically

问题描述

我试图触发事件单击从gridview的页脚中单击ImageButton的事件，但是我没有触发， 我将不胜感激， 提前致谢， 这是代码

I tried to fire the event click for an ImageButton from the footer of a gridview but I it didn't fire, I will appreciate any help, thanks in advance, here is the code

protected void grvBubDetails_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.Footer)
    {
         ImageButton imgbtnSendMail = new ImageButton();
         //ImageButton imgEdit = new ImageButton();
         imgbtnSendMail.ImageUrl = "~/Images/mail01.png";
         imgbtnSendMail.AlternateText = "Edit";
         imgbtnSendMail.ToolTip = "for send mail press here";
         imgbtnSendMail.Width = imgbtnSendMail.Height = 20;
         //imgbtnSendMail.CommandName = "sendMail";
         //imgbtnSendMail.CommandArgument = "somevalue";
         imgbtnSendMail.Click += new ImageClickEventHandler(imgbtnSendMail_Click);
         //imgbtnSendMail.Attributes["runat"] = "server";
         //imgbtnSendMail.Attributes["onclick"] = "imgbtnSendMail_Click";
         e.Row.Cells[6].Controls.Add(imgbtnSendMail);
    }
}
protected void imgbtnSendMail_Click(object sender, ImageClickEventArgs e)
{
        string Text = "Image clicked";
}

推荐答案

像这样更新grvBubDetails_RowDataBound事件；

update grvBubDetails_RowDataBound event like this;

ImageButton imgbtnSendMail = new ImageButton();
imgbtnSendMail.CommadName = "cmdSendMail"; // add this line
imgbtnSendMail.CommadArgument = "also you can pass a parameter from here";

将RowCommand事件添加到网格视图.在RowCommand事件处理函数中执行此操作；

Add RowCommand event to grid view. Do this in RowCommand event handler function;

if(e.CommandName.equals("cmdSendMail")){
    string Text = "Image clicked";
    string argument = e.CommandArgument;
}

更新:

在PageLoad事件之后触发了网格视图的RowCommand事件.您的按钮在每次重新加载页面后都被删除，并且由于rowDatabound事件不会触发而没有重新创建.

Grid view's RowCommand event fired after PageLoad event. Your button removed after every page reload, and has not recreated because rowDatabound event does not fire.

工作代码:

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            List<string> list = new List<string>()
            {
                "item 1",
                "item 2",
                "item 3"
            };
            GridView1.DataSource = list;
            GridView1.DataBind();
        }

        // make sure outside of !IsPostback
        // recreate button every page load
        Button btn = new Button();
        btn.CommandName = "cmdSendMail";
        btn.CommandArgument = "sample arg";
        btn.Text = "send mail";
        GridView1.FooterRow.Cells[0].Controls.Add(btn);
    }

    protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
    {
        Response.Write(e.CommandName + new Random().Next().ToString());
    }
}

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