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AnswerRe: i want to accept only numeric value to a textbox in datagridview Pin
thatraja14-Feb-14 4:12
professionalthatraja14-Feb-14 4:12 
GeneralRe: i want to accept only numeric value to a textbox in datagridview Pin
BillWoodruff14-Feb-14 13:54
professionalBillWoodruff14-Feb-14 13:54 
While the code you will find here is used with a WinForms TextBox, not with a DataGridView, you might find some ideas you can use in the logic shown in the code for the 'KeyDown EventHandler [^]:
C#
private void tbxIntegerEntry_KeyDown(object sender, KeyEventArgs e)
{
    if (e.KeyCode == Keys.Enter)
    {
        string mTxt = tbxIntegerEntry.Text;

        EnteredValue = null;

        // don't evaluate if Text is empty or only minus sign
        if (mTxt != String.Empty && mTxt != "-")
        {
            EnteredValue = Convert.ToInt64(mTxt);
            this.Hide();
        }
    }

    e.SuppressKeyPress =
    !(
        // backspace allowed
        e.KeyCode == Keys.Back
        ||
        // must not exceed length limit
        tbxIntegerEntry.Text.Length <= maxInt64Length
        &&
        // digits allowed
        char.IsDigit(Convert.ToChar(e.KeyCode))
        ||
        // minus sign allowed at position #0
        (tbxIntegerEntry.Text.Length == 0) && (e.KeyCode == Keys.OemMinus)
    );
}

“But I don't want to go among mad people,” Alice remarked.

“Oh, you can't help that,” said the Cat: “we're all mad here. I'm mad. You're mad.”

“How do you know I'm mad?” said Alice.

“You must be," said the Cat, or you wouldn't have come here.” Lewis Carroll

QuestionImpersonation Pin
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QuestionDirtying my hand with regular expression for first time Pin
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AnswerRe: Dirtying my hand with regular expression for first time Pin
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GeneralRe: Dirtying my hand with regular expression for first time Pin
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GeneralRe: Dirtying my hand with regular expression for first time Pin
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GeneralRe: Dirtying my hand with regular expression for first time Pin
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AnswerRe: Dirtying my hand with regular expression for first time Pin
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QuestionConcepts about Generics Pin
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AnswerRe: Concepts about Generics Pin
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QuestionWho can help me with this C# Project. Pin
horoz07413-Feb-14 7:05
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AnswerRe: Who can help me with this C# Project. Pin
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QuestionRe: Who can help me with this C# Project. Pin
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AnswerRe: Who can help me with this C# Project. Pin
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GeneralRe: Who can help me with this C# Project. Pin
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QuestionDropDownlist keeps disappearing Pin
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SuggestionRe: DropDownlist keeps disappearing Pin
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QuestionOut of Memory error while generating TreeView Pin
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AnswerRe: Out of Memory error while generating TreeView Pin
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AnswerRe: Out of Memory error while generating TreeView Pin
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AnswerRe: Out of Memory error while generating TreeView Pin
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QuestionNumericString Sort Pin
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