help with asp.net gridview/checkboxfield binding

my stored procedure is returning either 1 or 0 depending on the value of another field, however, my checkboxfield in the gridview I've created to display the data returned fr开发者_C百科om the stored proc, is crashing saying that the value set to the checkboxfield is a string, not boolean. How can I take the field returned as 1 or 0 and convert it to boolean so my checkbox can bind to this value for checking/unchecking?

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aspx

<asp:TemplateField SortExpression="TragamonedaActiva" HeaderText="Trag. Activa">
    <ItemTemplate>
        <asp:CheckBox ID="CK2" runat="server" EnableViewState="true"
             Checked='<%# Convert.ToBoolean(Eval("TragamonedaActiva")) %>'/>
    </ItemTemplate>
</asp:TemplateField>

.cs

isChecked = ((CheckBox)gvReport.Rows[rowNo].FindControl("CK1")).Checked;

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I belive you want something like this - this works for a DataGrid:

<asp:CheckBox ... 
   Checked='<%# Convert.ToBoolean( DataBinder.Eval(Container.DataItem, "is_checked"))%>'
/>

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Create a template field with your checkbox in the datagrid.

// In your aspx page
<asp:CheckBox ID="yourCheckBox" runat="server" OnDataBinding="yourCheckBox_DataBinding" />

// In your codebehind .cs file
protected void yourCheckBox_DataBinding(object sender, System.EventArgs e)
{
    CheckBox chk = (CheckBox)(sender);
    chk.Checked = Convert.ToBoolean(Eval("YourFieldName"));
}