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Question

i want text box accept numaric and this sign - nothing els

Sanjeeb Lenka · Answer

try this in keypress event of textbox: private void textBox1_KeyPress(object sender KeyPressEventArgs e) { const char hyphen = (char)0x2D; const char delete = (char)0x08; if (!char.IsNumber(e.KeyChar) && e.KeyChar != hyphen && e.KeyChar != delete) e.Handled = true; }

Vulpes · Answer

If it's Windows Forms and you only want to allow a hyphen at the start of the string (i.e. a minus sign) then add this line to Sanjeeb's code: private void textBox1_KeyPress(object sender KeyPressEventArgs e) { const char hyphen = (char)0x2D; const char delete = (char)0x08; if (!char.IsNumber(e.KeyChar) && e.KeyChar != hyphen && e.KeyChar != delete) e.Handled = true; i f (e.KeyChar == hyphen && textBox1.Text.Length > 0) e.Handled = true; }

Iftikar Hussain · Answer

Hi Are you looking for in ASP.NET or Windows Form? Regards Iftikar