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September 5, 2008 03:11am pdt
 
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Binding to checked Property of a Radio Button in a datagrid

Zones: C# Programming Language, .NET, Programming for ASP.NET
Tags: C#
I want to bind the checked property of a few Radio buttons to a database value.  I thought that I had it right, but for some reason, it just isn't working.

You can rule out not getting the data from the data source, because that was tested successfully by adding a label control to the datagrid and using: Text= DataBinder.Eval(Container.DataItem, "Increase_Decrease").

Can anybody help me?

Thanks,

Greg
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<asp:TemplateColumn HeaderText="Increase">
	<HeaderStyle Font-Bold="True"></HeaderStyle>
	<ItemStyle Width="50px"></ItemStyle>
	<ItemTemplate>
		<asp:RadioButton ID="rbIncrease" Checked ='<%# (DataBinder.Eval(Container.DataItem, "Increase_Decrease")=="Increase")?Convert.ToBoolean("True"):Convert.ToBoolean("False") %>' Font-Size="Smaller" Runat="server" GroupName="Increase_Decrease" />
	</ItemTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn HeaderText="Decrease">
	<HeaderStyle Font-Bold="True"></HeaderStyle>
	<ItemStyle Width="50px"></ItemStyle>
	<ItemTemplate>
		<asp:RadioButton ID="rbDecrease" Checked ='<%# (DataBinder.Eval(Container.DataItem, "Increase_Decrease")=="Decrease")?Convert.ToBoolean("True"):Convert.ToBoolean("False") %>' Font-Size="Smaller" Runat="server" GroupName="Increase_Decrease" />
	</ItemTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn HeaderText="No Change">
	<HeaderStyle Font-Bold="True"></HeaderStyle>
	<ItemStyle Width="50px"></ItemStyle>
	<ItemTemplate>
		<asp:RadioButton ID="rbNoChange" Checked ='<%# (DataBinder.Eval(Container.DataItem, "Increase_Decrease")=="No Change")?Convert.ToBoolean("True"):Convert.ToBoolean("False") %>' Font-Size="Smaller" Runat="server" GroupName="Increase_Decrease" />
	</ItemTemplate>
</asp:TemplateColumn>
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8.4
Question Stats
Zone: Programming
Question Asked By: norgrenit
Solution Provided By: Irzana
Participating Experts: 2
Solution Grade: B
Views: 37
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[+][-]Expert Comment by TheLearnedOne

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[+][-]Accepted Solution by Irzana

Rank: Master

Accepted Solution by Irzana:

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Comment by norgrenit
I came to the right answer by using the code :

Many Kudos to Irzana for helping.

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<asp:TemplateColumn HeaderText="Increase">
	<HeaderStyle Font-Bold="True"></HeaderStyle>
	<ItemStyle Width="50px"></ItemStyle>
	<ItemTemplate>
		<asp:RadioButton ID="rbIncrease" Checked ='<%# GetIncreaseValue(DataBinder.Eval(Container.DataItem, "Increase_Decrease").ToString())?%>' Font-Size="Smaller" Runat="server" GroupName="Increase_Decrease" />
	</ItemTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn HeaderText="Decrease">
	<HeaderStyle Font-Bold="True"></HeaderStyle>
	<ItemStyle Width="50px"></ItemStyle>
	<ItemTemplate>
		<asp:RadioButton ID="rbDecrease" Checked ='<%# GetDecreaseValue(DataBinder.Eval(Container.DataItem, "Increase_Decrease").ToString()) %>' Font-Size="Smaller" Runat="server" GroupName="Increase_Decrease" />
	</ItemTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn HeaderText="No Change">
	<HeaderStyle Font-Bold="True"></HeaderStyle>
	<ItemStyle Width="50px"></ItemStyle>
	<ItemTemplate>
		<asp:RadioButton ID="rbNoChange" Checked ='<%# GetNoChangeValue(DataBinder.Eval(Container.DataItem, "Increase_Decrease").ToString()) %>' Font-Size="Smaller" Runat="server" GroupName="Increase_Decrease" />
	</ItemTemplate>
</asp:TemplateColumn>
 
...
 
public  bool GetIncreaseValue(string id)
{
     bool  retValue = false ;
     if (id.Equals("Increase"))
     {
             retValue = true ;
     }
     else
     {
         retValue = false ;
     }
     return retValue;
}
public  bool GetDecreaseValue(string id)
{
     bool  retValue = false ;
     if (id.Equals("Decrease"))
     {
             retValue = true ;
     }
     else
     {
         retValue = false ;
     }
     return retValue;
}
public  bool GetNoChangeValue(string id)
{
     bool  retValue = false ;
     if (id.Equals("No Change"))
     {
             retValue = true ;
     }
     else
     {
         retValue = false ;
     }
     return retValue;
}
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