How to find space in between word using c# .net

In windows Application we want to check empty space paste the below coding in your .cs page...


for example

Name Field: "  Mano   kumar"

Here 2 spaces . so we want to find put below lines.....

if(TextBox1.Text.Contains(""))

{

     MessageBox.Show("Please Enter Name without Space");

}

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How to validate textbox to accept only numeric value in C#.net

 Below Coding for accept only Numbers.....


      if ((e.KeyChar < 48 || e.KeyChar > 57) && e.KeyChar != 8)
            {
                e.Handled = true; // Remove the character
                MessageBox.Show("Please Enter No only...");
            }

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How to clear selected item in combobox in c#

For Windows Application We Want to Paste Below Lines


combobox1.selectedIndex = -1;

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How to validate textbox to accept only characters in windows form

 Below Coding TextBox Accept only Characters....


  if ((e.KeyChar >= 65 && e.KeyChar <= 90) || (e.KeyChar >= 97 && e.KeyChar <= 122) ||               (e.KeyChar  == 32) || (e.KeyChar == 8))  //keychar 8 is for backspace
            {
                e.Handled = false;

            }
            else
            {
                e.Handled = true;
                MessageBox.Show("Please Enter Character Only...." );
             }

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