Allow only one check box checked in gridview

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Hi,

I am having a check box in grid view.
But i want to allow only one check box to be checked at time
i.e if one check box is checked then other should be unchecked automatically.
I don wan to use any java script.can any one Gide me with resolving this.

Regards

Shiv

Posted 26-May-11 2:30am

shivtk

Updated 10-Apr-16 20:33pm

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Comments

Sergey Alexandrovich Kryukov 26-May-11 20:57pm

Please remove this all-caps. This is considered shouting in the Web, which is not very polite.
--SA

shivtk 1-Jun-11 9:07am

Thanks for suggestion

Sergey Alexandrovich Kryukov 1-Jun-11 19:52pm

Thank you for following it.
--SA

4 solutions

Solution 4

You can do this using Javascript function

JavaScript

function CheckOne(obj) {
    var grid = obj.parentNode.parentNode.parentNode;
    var inputs = grid.getElementsByTagName("input");
    for (var i = 0; i < inputs.length; i++) {
        if (inputs[i].type == "checkbox") {
            if (obj.checked && inputs[i] != obj && inputs[i].checked) {
                inputs[i].checked = false;
            }
        }
    }
}

Now Call through Checkbox inside the grid

ASP.NET

<ItemTemplate>
  <asp:CheckBox ID="ChkSelect" runat="server"  onclick="CheckOne(this)" />
</ItemTemplate>

Posted 10-Apr-16 20:33pm

Moolshanker

Solution 1

Does that not perfectly describe a radio button, instead of using a checkbox?

Posted 26-May-11 2:33am

CDP1802

Comments

shivtk 26-May-11 8:44am

Yes, but i wan to make the check box behave like radio button

Sergey Alexandrovich Kryukov 26-May-11 20:55pm

You should not want it! Think about what your user want: to be compliant with standards and support commonly expected behavior of standard controls.
My 1 for your question, therefore.
--SA

shivtk 1-Jun-11 9:04am

That doesn't matter whether u use radio button or check box as you can't group the radio button in the grid, as the data flooded to the grid is dynamic. so if u can suggest for radio button i can do it even for check box.

Shiv

Sergey Alexandrovich Kryukov 1-Jun-11 19:54pm

If you use check box or radio button in the situation where is does not matter which one, it simply means you should not use either of them. Isn't that obvious?
--SA

[no name] 26-May-11 9:04am

And why would that be worth the trouble?

Sergey Alexandrovich Kryukov 26-May-11 20:56pm

You're absolutely right. OP gets my 1; and your answer -- my 5.
--SA

[no name] 26-May-11 21:59pm

Thanks. And not to forget the time and effort going into writing and maintaining a custom control that behaves like a radio button and looks like a checkbox. I never had a project where I could not have found more important things to work on :)

Sergey Alexandrovich Kryukov 28-May-11 2:48am

He he. Right. Some inquirers send us questions about development which only demonstrate that they still need to get a basic understanding of the simple system users. They need to get explained what is keyboard focus, window activation, popup, modal window, etc., from the user's point of view.
--SA

Solution 2

At last i have found a solution. If any one feels the code is to be fine tuned please help me out.
It works fine for my requirement.

C#

protected void chkSelect_CheckedChanged(object sender, EventArgs e)
    {
        int i;
        CheckBox chk;
        for (i = 0; i &lt;= grdRmaDetails.Rows.Count - 1; i++)
        {
            chk = (CheckBox)grdRmaDetails.Rows[i].FindControl(&quot;chkSelect&quot;);
            if (chk.Checked == true)
            {
                if (jVal != i)
                {
                    iVal = i;
                    jVal = i;
                    if (jVal &gt;= i)
                    {
                        break;
                    }
                }
            }
        }
        for (i = 0; i &lt;= grdRmaDetails.Rows.Count - 1; i++)
        {
            chk = (CheckBox)grdRmaDetails.Rows[i].FindControl(&quot;chkSelect&quot;);
            if (i == iVal)
            {
                chk.Checked = true;
            }
            else
            {
                chk.Checked = false;
            }
        }
    }
}

Regards

Shiv

Posted 1-Jun-11 18:47pm

shivtk

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shivtk · Accepted Answer · 2011-06-01T18:50:00