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C# ASP.NET Radio buttons I need unique rows AND columns (web app)

Posted on 2009-05-20
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Last Modified: 2013-12-17
C# + ASP.NET web application. Need unique rows and coumns for radio buttons.

I have tried everything from google to tinkering - no luck. I have a 7 by 7 grid of radio buttons. Across the columns are the days of the week. Across the rows (side) are labels. I need for the user to only be able to select one entry per day and one entry ONLY per row.

Using GroupName="Monday" I can easily set a column OR row to only accept one radio button selection but how do I also get both row and column it to only select one?

Help please.

Thanks!
KarlS2010
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Question by:KarlS2010
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Assisted Solution

by:Anurag Thakur
Anurag Thakur earned 200 total points
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to achieve the functionality you will have to create a work around and there is no direct solution available
the approach what i will suggest set the groupname property but along with that you will have to add a customvalidator control and then manually loop around a set of radio buttons to see if more than one is selected and if yes then thow an error
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by:KarlS2010
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I was afraid of that - anyone think of anything else? (thanks raq)
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by:KarlS2010
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What if this were being done in a Windows Form?
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by:Anurag Thakur
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its logically not possible even in windows forms (havent worked much in win forms though)
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Accepted Solution

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wht1986 earned 300 total points
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Below is a quick code behind solution.  Notice all the RadioButtons hav an ID in the format of

"RadioButton" + the row number + the column number

They all go to the same check changed event. I put mine inside an update panel as well.
<form id="form1" runat="server">

    <asp:ScriptManager ID="ScriptManager1" runat="server" />

    <asp:UpdatePanel ID="UpdatePanel1" runat="server">

        <ContentTemplate>

            <table>

                <tr>

                    <th>Label</th>

                    <th>Sunday</th>

                    <th>Monday</th>

                    <th>Tuesday</th>

                    <th>Wednesday</th>

                    <th>Thursday</th>

                    <th>Friday</th>

                    <th>Saturday</th>

                </tr>

                <tr>

                    <td><asp:Label ID="Label1" Text="Label1" runat="server" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton11" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton12" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton13" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton14" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton15" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton16" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton17" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                </tr>

                <tr>

                    <td><asp:Label ID="Label2" Text="Label2" runat="server" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton21" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton22" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton23" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton24" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton25" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton26" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton27" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                </tr>

                <tr>

                    <td><asp:Label ID="Label3" Text="Label3" runat="server" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton31" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton32" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton33" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton34" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton35" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton36" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton37" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                </tr>

                <tr>

                    <td><asp:Label ID="Label4" Text="Label4" runat="server" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton41" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton42" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton43" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton44" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton45" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton46" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton47" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                </tr>

                <tr>

                    <td><asp:Label ID="Label5" Text="Label5" runat="server" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton51" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton52" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton53" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton54" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton55" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton56" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton57" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                </tr>

                <tr>

                    <td><asp:Label ID="Label6" Text="Label6" runat="server" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton61" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton62" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton63" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton64" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton65" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton66" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton67" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                </tr>

                <tr>

                    <td><asp:Label ID="Label7" Text="Label7" runat="server" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton71" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton72" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton73" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton74" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton75" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton76" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                    <td align="center"><asp:RadioButton ID="RadioButton77" runat="server" oncheckedchanged="RadioButton_CheckedChanged" AutoPostBack="true" /></td>

                </tr>

            </table>

        </ContentTemplate>

    </asp:UpdatePanel>

</form>
 

=========================================================
 

public partial class _Default : System.Web.UI.Page 

{
 

    protected void RadioButton_CheckedChanged(object sender, EventArgs e)

    {

        RadioButton rb = (RadioButton)sender;
 

        int rbRow = int.Parse(rb.ID.Substring(11, 1));

        int rbCol = int.Parse(rb.ID.Substring(12, 1));
 

        for (int col = 1; col < 8; col++)

        {

            rb = (RadioButton)FindControl("RadioButton" + rbRow.ToString() + col.ToString());

            rb.Checked = (rbCol == col);

        }
 

        for (int row = 1; row < 8; row++)

        {

            rb = (RadioButton)FindControl("RadioButton" + row.ToString() + rbCol.ToString());

            rb.Checked = (rbRow == row);

        }
 

    }

}

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