How to invert Checkbox value in DataGridView

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Hi all
I have a DataGridView which filled from binding source
the data i get from the source contains a 0,1 column witch i show it as checkbox

I want to invert checkbox value in the DataGridView
(means if value=0>>checked , if value=1>>unchecked)

Posted 24-Jan-15 3:42am

M. Daban

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CHill60 24-Jan-15 9:46am

How do you get the data from the source (e.g. what is the sql query?)

M. Daban 24-Jan-15 9:56am

its "select *" but i can't edit it

CHill60 24-Jan-15 9:59am

Why can't you edit it?

M. Daban 24-Jan-15 10:00am

its from dll

George Swan 24-Jan-15 10:07am

Is this any use to you?
http://www.codeproject.com/Articles/24330/WPF-Bind-to-Opposite-Boolean-Value-Using-a-Convert

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Aditya Prakash Roy · Answer 1 · 2015-01-24T04:13:00

Hello Mr.Daban,
You Can access any control value on rowDataBound event of gridView by using .net control
below code is in c# language

C#

protected void YourGridView_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            if (e.Row.Cells[0].Text == 0)
            {
                ((CheckBox)e.Rows.Cells[1].Controls[0]).Checked= true;
            }
             else  if (e.Row.Cells[0].Text == 1)
            {
                ((CheckBox)e.Rows.Cells[1].Controls[0]).Checked= false;
            }
        }
    }

Sergey Alexandrovich Kryukov · Answer 2 · 2015-01-24T06:29:00

If your cells are really check box cells, the values are not 0 or 1, they are Boolean values.

You can do this to all the cells in questions:

C#

DataGridViewCell cell = // some cell of the runtime type DataGridViewCheckBoxCell
cell.Value = !((bool)cell.Value);

If you have to, you can checkup either the runtime type of the cell, or, better, the property DataGridViewCell.ValueType, to make sure you are working with the cell or appropriate type.

Please see:
https://msdn.microsoft.com/en-us/library/system.windows.forms.datagridviewcheckboxcell(v=vs.110).aspx[^],
https://msdn.microsoft.com/en-us/library/system.windows.forms.datagridviewcell%28v=vs.110%29.aspx[^],
https://msdn.microsoft.com/en-us/library/system.windows.forms.datagridviewcell.value(v=vs.110).aspx[^],
https://msdn.microsoft.com/en-us/library/system.windows.forms.datagridviewcell.valuetype(v=vs.110).aspx[^].

—SA

How to invert Checkbox value in DataGridView

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