how to bind checkbox value from datatable in gridview

Question

I need to figure out how to bind a CheckBox value in a GridView, I have written CheckBox.Checked= DataBinder.Eval(Container.DataItem, "IsSubscribed") in GridView, but the CheckBox is always checked, even when IsSubscribed is false.

I have bound the grid in Page_Load, before the page has posted back. Here is my code:

<asp:TemplateField HeaderText="Select"> 
     <ItemTemplate> 
        <asp:CheckBox 
            ID="chkIsSubscribed" runat="server" HeaderText="IsSubscribed" 
            Checked='<%# DataBinder.Eval(Container.DataItem, "IsSubscribed") %>'/>  
     </ItemTemplate> 
</asp:TemplateField>

Thanks.

please post ur code and u bind the grid in !ispostback so it will not call everytime on page load — rahularyansharma
– rahularyansharma, Commented Sep 14, 2011 at 3:55
I have binded grid in !ispostback,My code is: <asp:TemplateField HeaderText="Select"> <ItemTemplate> <asp:CheckBox ID="chkIsSubscribed" runat="server" HeaderText="IsSubscribed" Checked='<%# DataBinder.Eval(Container.DataItem, "IsSubscribed") %>' /> </ItemTemplate> </asp:TemplateField> — Tina
– Tina, Commented Sep 14, 2011 at 4:03
what value for is IsSubscribed returning is it returns the 0 or 1 or something else — rahularyansharma
– rahularyansharma, Commented Sep 14, 2011 at 4:17
Just seeing "Checked" resolved for me. I copied and pasted from a texbox. :) — Anthony Horne
– Anthony Horne, Commented Jan 17, 2016 at 14:06

Icarus · Accepted Answer · 2011-09-14 04:18:40Z

18

Put this code as your Item Template element:

<asp:TemplateField HeaderText="Select">
    <ItemTemplate>
        <asp:CheckBox ID="chkIsSubscribed" runat="server" HeaderText="IsSubscribed" 
        Checked='<%#bool.Parse(Eval("IsSubscribed").ToString())%>' />
    </ItemTemplate>
</asp:TemplateField>

answered Sep 14, 2011 at 4:18

Icarus

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James Johnson · Accepted Answer · 2011-09-14 18:08:43Z

13

<asp:TemplateField HeaderText="Select"> 
     <ItemTemplate> 
        <asp:CheckBox 
          ID="chkIsSubscribed" runat="server" HeaderText="IsSubscribed" 
          Checked='<%#Convert.ToBoolean(Eval("IsSubscribed")) %>'/>  
     </ItemTemplate> 
</asp:TemplateField>

please use this......

edited Sep 14, 2011 at 18:08

James Johnson

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answered Sep 14, 2011 at 4:20

rahularyansharma

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1 Comment

Simple Sandman Over a year ago

This solution took care of the Format Exception: String was not recognized as a valid Boolean

Philippe · Accepted Answer · 2014-03-14 15:04:02Z

4

Eval() give an object type. So you have to use Eval(..).ToString() if you want to compare it... Like:

        <asp:TemplateField HeaderText="Actif">
            <ItemTemplate><asp:CheckBox ID="chkIsACTIF" runat="server" Enabled="false" Checked='<%# (Eval("ACTIF").ToString() == "1" ? true : false) %>' /></ItemTemplate>
            <EditItemTemplate><asp:CheckBox ID="chkACTIF" runat="server" Checked='<%# (Eval("ACTIF").ToString() == "1" ? true : false) %>' Enabled="true" /></EditItemTemplate>
            <FooterTemplate><asp:CheckBox ID="chkNewACTIF" runat="server" Checked="true" /></FooterTemplate>
        </asp:TemplateField>

answered Mar 14, 2014 at 15:04

Philippe

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