Windows form textbox numbers only

private void textBox1_TextChanged(object sender, EventArgs e)
{
    if (System.Text.RegularExpressions.Regex.IsMatch(textBox1.Text, "[^0-9]"))
    {
        MessageBox.Show("Please enter only numbers.");
        textBox1.Text = textBox1.Text.Remove(textBox1.Text.Length - 1);
    }
}

Windows form textbox only allow numbers

private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
    {
        e.Handled = !char.IsDigit(e.KeyChar) && !char.IsControl(e.KeyChar);
    }

Similar codes

0 vote331 views1 answer
Save file dialog filter c#
C#
2 votes324 views1 answer
C# to binary
C#
0 vote291 views1 answer
How to download somthing from one drive unity
C#
1 vote344 views2 answers
Modify middleware response c# .net
C#
6 votes319 views2 answers
C# const vs readonly
C#
65 votes408 views6 answers
Unity reload scene
C#
0 vote323 views1 answer
C# remove invalid directory characters
C#
0 vote325 views1 answer
Windows form toolbox enter key
C#
1 vote325 views1 answer
C# add strings
C#
0 vote416 views1 answer
Visual studio pre build event not working
C#