Passing value from popup window to parent form's TextBox

Once again seen lot of questions on the forum related to passing values from popup window to the parent form textbox. Specially when they have some GridView type control in the popup. In the following example I will be using two forms, parent form will be parent.aspx and popup will be popup.aspx. Also note that my parent.aspx form is derived from some MasterPage. Code is provided both in VB.Net and C#.Net.

--- .aspx of parent form ---

<script type="text/javascript">
        function OpenPopup()
        {
            window.open("popup.aspx","List","scrollbars=no,resizable=no,width=400,height=280");
            return false;
        }
</script>
.
.
.
<asp:TextBox ID="txtPopupValue" runat="server" Width="327px"></asp:TextBox>
    <asp:Button ID="Button1" runat="server" Text="Show List" />

--- .vb of parent.aspx if vb.net is the language ---

If Not IsPostBack Then
 Me.Button1.Attributes.Add("onclick", "javascript:return OpenPopup()")
End If

--- .cs of parent.aspx if C#.net is the language ---

if !(IsPostBack)
{
 this.Button1.Attributes.Add("onclick", "javascript:return OpenPopup()");
}

--- .aspx of popup form ---

<script language="javascript">
        function GetRowValue(val)
        {
            window.opener.document.getElementById("ctl00_ContentPlaceHolder1_TextBox2").value = val; //hardcoded value used to minimize the code. ControlID can be passed as query string to the popup window
            window.close();
        }
</script>
.
.
.
<asp:GridView ID="GridView1" runat="server" DataSourceID="SqlDataSource1" Width="400px" AllowPaging="True">
            <Columns>
                <asp:TemplateField>
                    <AlternatingItemTemplate>
                        <asp:Button ID="btnSelect" runat="server" Text="Select" />
                    </AlternatingItemTemplate>
                    <ItemTemplate>
                        <asp:Button ID="btnSelect" runat="server" Text="Select" />
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </asp:GridView>

--- .vb file if vb.net is the language ---

Protected Sub GridView1_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GridView1.RowDataBound
        If (e.Row.RowType = DataControlRowType.DataRow) Then
            DirectCast(e.Row.FindControl("btnSelect"), Button).Attributes.Add("onclick", "javascript:GetRowValue('" & e.Row.Cells(1).Text & "')") 'assuming that the required value column is the second column in gridview
        End If
    End Sub

--- .cs file if C#.net is the language ---

protected void GridView1_RowDataBound(object sender, System.Web.UI.WebControls.GridViewRowEventArgs e)
{
    if ((e.Row.RowType == DataControlRowType.DataRow)) {
        ((Button)e.Row.FindControl("btnSelect")).Attributes.Add("onclick", "javascript:GetRowValue('" + e.Row.Cells(1).Text + "')");
        //assuming that the required value column is the second column in gridview
    }
}

I hope the code above is straight forward and easy to understand.

Happy Coding!!!

You must Login to comment.