enabled/disabled button based on checkbox on GridView

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Hi,
I have 4 columns in my grid in which i have check box and button controls
I need to make button enabled or disabled based on the checkbox checked by the user. How can I do that?

XML

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" AccessKey="a" DataKeyNames="id" AllowPaging="false" BorderColor="Blue" ForeColor="Black" OnRowCommand="grid1_rowcommand" GridLines="Both" HeaderStyle-BorderColor="Aqua" BackColor="White" Font-Size ="small" CssClass="header" OnRowDataBound="GridView1_RowDataBound">
                   <Columns>
        <asp:TemplateField HeaderText="select">
        <HeaderTemplate>

                    </HeaderTemplate>
                            <ItemTemplate>
                                <asp:CheckBox ID="checkboxr" runat="server" OnCheckedChanged="CheckBox2_CheckedChanged1" />
                            </ItemTemplate>
                        </asp:TemplateField>
            <asp:TemplateField HeaderText=" col2" FooterStyle-HorizontalAlign="Center">
                <EditItemTemplate>
                    <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("ID") %>'></asp:TextBox>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="Label1" runat="server" Text='<%# Bind("ID") %>'></asp:Label>


                </ItemTemplate>
            </asp:TemplateField>
                       <asp:TemplateField HeaderText="col3">
                           <EditItemTemplate>
                               <asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind(" ") %>'></asp:TextBox>
                           </EditItemTemplate>
                           <ItemTemplate>
                               <asp:Label ID="Label2" runat="server" Text='<%# Bind(" ") %>'></asp:Label>
                           </ItemTemplate>
                       </asp:TemplateField>


                       <asp:TemplateField HeaderText="button">
                           <EditItemTemplate>
                               <asp:TextBox ID="TextBox5" runat="server"></asp:TextBox>
                           </EditItemTemplate>
                           <ItemTemplate>
                               <asp:Button ID="Button6" runat="server" Text="Upload" CommandName="RowSelected"/>
                           </ItemTemplate>
                       </asp:TemplateField>

</Columns>

</asp:GridView>

thanks inadvance

Posted 24-Nov-11 0:34am

pradeep manne

Updated 24-Nov-11 2:18am

v4

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LanFanNinja 24-Nov-11 9:06am

Check Solution 2

2 solutions

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*Karthik Harve* · Answer 1 · 2011-11-24T00:55:00

Solution 1

use this C# code on check changed event..

C#

Protected void CheckBox2_CheckedChanged1(Object sender, EventArgs e)
{
    CheckBox chk = (CheckBox)sender;
    GridViewRow gridrow = (GridViewRow)(chk.parent);
    if (chk.checked)
    {
         Button btn = (Button)(gridrow.FindControl("Button6"));
         btn.enabled=true;
    }
    else
    {
          Button btn = (Button)(gridrow.FindControl("Button6"));
          btn.enabled=false;

    }
}

Hope this helps...

Posted 24-Nov-11 0:55am

Karthik Harve

Updated 24-Nov-11 1:34am

v2

Comments

pradeep manne 24-Nov-11 7:25am

hi,
thanks for ur reply
GridViewRow gridrow = (GridViewRow)(chk.parent.parent);
giving an error at that point
cannot implicitly convert system.web.ui.webcontrol.gridview toconvert system.web.ui.webcontrol.gridviewrow

Karthik Harve 24-Nov-11 7:34am

try this...
GridViewRow gridrow = (GridViewRow)(chk.parent);

pradeep manne 24-Nov-11 8:11am

hi,
thanks for ur quick reply
getting same error after using
GridViewRow gridrow = (GridViewRow)(chk.parent);

LanFanNinja · Answer 2 · 2011-11-24T03:03:00

Well I strangely enough never used a grid view in the kind of stuff I work on. But I can tell you right now that you are receiving this error "cannot implicitly convert system.web.ui.webcontrol.gridview to system.web.ui.webcontrol.gridviewrow" because you will never be able to convert a GridView to a GridViewRow "GridViewRow gridrow = (GridViewRow)(chk.parent);".

Something like this would have to be done instead (based on solution 1 code)

C#

protected void CheckBox2_CheckedChanged1(Object sender, EventArgs e)
{
    CheckBox chk = (CheckBox)sender;
    GridViewRow gridrow = ((GridView)(chk.Parent)).Rows[rowNum];
    if (chk.Checked)
    {
         Button btn = (Button)(gridrow.FindControl("Button6"));
         btn.Enabled = true;
    }
    else
    {
          Button btn = (Button)(gridrow.FindControl("Button6"));
          btn.Enabled = false;
    }
}

Note this line

C#

GridViewRow gridrow = ((GridView)(chk.Parent)).Rows[rowNum];