How to open popup window when check box checked in gridview?

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Hello, I` making board using GridView.

And now, I want to make like this :

1. If Checkbox is checked in GridView and click modify Button, open popup windows

2. Else alert message 'Please check your item'

I clicked the button below code, When I choose nothing, alert message showed,

and I checked checkbox and press button, also alert message showed.not opened popup

window.

But instead of javascript , if I use code

C#

Response.Redirect("UserBoard_Edit.aspx?BoardItemID=" + boardItemID);

it works well.

I don`t know why It`s not fired...

Is it possible making one javascript function?

Please help me.....

What I have tried:

--- This is .aspx page ---

C#

<asp:LinkButton ID="lnbEdit" runat="server" Text="Edit" OnClick="lnbEdit_Click">

<asp:GridView ID="grvList" DataKeyNames="BoardItemID" runat="server" AutoGenerateColumns="False" >
    <columns>
        <asp:BoundField HeaderText ="boardItemID" DataField="BoardItemID" HeaderStyle-CssClass="hidden">
             <itemstyle cssclass="hidden" />
        
        <asp:BoundField HeaderText="conNo" Visible="false" DataField="indexNo" />
        <asp:TemplateField>
             <itemtemplate>
                 <asp:CheckBox ID="chk" runat="server"/>
             </itemtemplate>
         ...
...
        
        </columns>

--- This is code behind page ---

C#

protected void lnbEdit_Click(object sender, EventArgs e)
  {
      foreach (GridViewRow gRow in grvList.Rows)
      {
          CheckBox chk = (CheckBox)gRow.FindControl("chk");
          if (chk.Checked)
          {
              int boardItemID = Convert.ToInt32(gRow.Cells[0].Text);
              string popURL = "UserBoard_Edit.aspx?BoardItemID=" + boardItemID;
              string openPopUp = @"
              <script type='text/javascript'>
                  popup = window.open('" + popURL + "', 'open_window', 'width = 880, height = 500, left = 0, top = 0'); popup.focus();</script>";
              this.ClientScript.RegisterClientScriptBlock(this.GetType(), "script", openPopUp);
              //Response.Redirect("UserBoard_Edit.aspx?BoardItemID=" + boardItemID);
          }
          else
          {
              string message = @"
              <script type='text/javascript'>
                  alert('Please check your Item');
              </script>";
              this.ClientScript.RegisterClientScriptBlock(this.GetType(), "script", message);
          }
      }
  }

Posted 23-Aug-16 23:17pm

RydenChoi

Updated 24-Aug-16 1:29am

v6

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Vincent Maverick Durano · Answer 1 · 2016-08-24T01:29:00

Quote:
and I checked checkbox and press button, also alert message showed.not opened popup window.

It seems that your CheckBox Checked property always returns false. Have you tried debugging your code?

To ensure that the CheckBox state will not reset on each and every postback, then you must bind your GridView within Not IsPostback block in Page_Load event:

C#

protected void Page_Load(object sender, EventArgs e){
        if (!IsPostBack)
        {
            //Bind Your GridView Here
        }
}