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Check if TextBox Is Empty in C#

In C#, there are multiple ways to check if TextBox value is not empty:
1) Using String.IsNullOrEmpty() method.
2) Using TextBox.Text.Length property.

You can use below examples in any method.

Example using String.IsNullOrEmpty() method

if (String.IsNullOrWhitespace(textBox1.Text))
     label1.Text = "TEXT BOX IS EMPTY";

Example using TextBox.Text.Length property

if (textBox1.Text.Length == 0)
      label1.Text = "TEXT BOX IS EMPTY";


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