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How to set min/max value in DatagridviewTextBoxColumn (in Winform)

Posted on 2014-03-02
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Last Modified: 2014-03-04
Hi expert
Is it possible to set the min/max values in DataGridViewTextBoxColumn?
I want it to be between 10-1000.

I am using Winform .NET 3.5, C#.

Thanks in advance.
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Question by:dominicwong
3 Comments
 
LVL 52

Accepted Solution

by:
Carl Tawn earned 1200 total points
ID: 39899896
You would have to either add a column to your grid with a custom control that enforces a range, or you can handle the CellValidating event and check the value manually. Something along the lines of:
        private void Form1_Load(object sender, EventArgs e)
        {
            dataGridView1.Columns.Add(new DataGridViewTextBoxColumn());
            dataGridView1.Rows.Add();

            dataGridView1.CellValidating += dataGridView1_CellValidating;
        }

        void dataGridView1_CellValidating(object sender, DataGridViewCellValidatingEventArgs e)
        {
            if (e.ColumnIndex == <index of your column>)
            {
                int val;
                if (int.TryParse(e.FormattedValue.ToString(), out val))
                {
                    if (val < 10 || val > 1000)
                        dataGridView1.Rows[e.RowIndex].ErrorText = "Number must be between 10 and 1000";
                }
                else
                {
                     dataGridView1.Rows[e.RowIndex].ErrorText = "Value must be numeric";
                }
            }
        }

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LVL 13

Assisted Solution

by:Naman Goel
Naman Goel earned 800 total points
ID: 39900036
Yes you can use CellValidating event for the same:

Here my column Index is 2.

   private void dataGridView1_CellValidating(object sender, DataGridViewCellValidatingEventArgs e)
        {
            if (e.ColumnIndex == 2)
            {
                int cellValue = int.Parse(dataGridView1[e.ColumnIndex, e.RowIndex].Value.ToString());
                if (!(cellValue >= 10 && cellValue <= 100))
                {
                    e.Cancel = true;
                }
            }
        }

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http://social.msdn.microsoft.com/Forums/windows/en-US/e36c8618-6224-49e3-af36-b536bd2a5ffb/datagridview-cell-validation?forum=winformsdatacontrols
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Author Closing Comment

by:dominicwong
ID: 39904970
Thanks Carl and Naman.
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