What is regex for cell selection of a row in datagridview

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I have a datagridview with 5 columns. Based on first column selected I want to skip validation. In the following code, it is not hapenning. The error is shown as if no row is selected.

C#

validator = new Regex(@"^[0-9]{0}[0-9A-Z]$");
           if (!validator.IsMatch(dataGridView1.Text))
               errors.AppendLine("Select order No. from grid");

How to solve this?

Posted 30-Mar-14 18:51pm

S.Rajendran from Coimbatore

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Raul Iloc · Accepted Answer · 2014-03-30T19:27:00

Solution 1

You should change the validation condition like bellow:

C#

if ( !(dataGridView1.CurrentCell.ColumnIndex  == 0 && dataGridView1.SelectedCells.Count > 0) && !validator.IsMatch(dataGridView1.Text))
    errors.AppendLine("Select order No. from grid");

Posted 30-Mar-14 19:27pm

Raul Iloc

Updated 30-Mar-14 20:38pm

v4

Comments

S.Rajendran from Coimbatore 31-Mar-14 1:40am

I tried with your validation condition but still is not escaping.

Raul Iloc 31-Mar-14 1:44am

Are you shore that you are talking about the selection of the first column and not about the selection of the first row or first cell?

S.Rajendran from Coimbatore 31-Mar-14 1:56am

I intend to select the first cell of any row as per choice.

Raul Iloc 31-Mar-14 2:05am

See my update in my solution!

S.Rajendran from Coimbatore 31-Mar-14 2:23am

Now, what happens is that even if I dont select any rows, it escapes and not showing error. In short, if I select or dont select it is not validating.

Raul Iloc 31-Mar-14 2:41am

1.See my update!
2.I have a question related with "dataGridView1.Text": what do you trying to validate by reading this (because is the text associated with the control itself and is not under the user input control)?

S.Rajendran from Coimbatore 31-Mar-14 2:45am

This datagridview1 is generated from a table. The dgv has 6 headers and the first header is 'order no' . I use the data under this 'order no' of any row selected as per user's wish.

S.Rajendran from Coimbatore 31-Mar-14 2:48am

Your updated code also not helping. The same problem as told previously.

Raul Iloc 31-Mar-14 2:53am

I just tested into a test application my suggestion:
"if(!(dataGridView1.CurrentCell.ColumnIndex == 0 && dataGridView1.SelectedCells.Count > 0)" and works fine.
So what event do you use it to invoke the code for validation?

S.Rajendran from Coimbatore 31-Mar-14 3:00am

This code worked for me.
if((dataGridView1.SelectedCells.Count ==1) && !validator.IsMatch(dataGridView1.Text))
Thank you.

What is regex for cell selection of a row in datagridview

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What is regex for cell selection of a row in datagridview

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