How to check if the textbox is empty

[sbandalli]

How to check if the text box is empty in C#?? I have to display an error box if the textbox is empty. I am trying this way,but no results. Thank you for the help.

private void Save_Click(obje ct sender, EventArgs e)
{

if (textBox1.Text == String.Empty)
{

errortextBox2.V isible = true;
errorgroupBox2. Visible = true;
errortextBox3.V isible = true;
errorbutton1.Vi sible = true;
}
else
{

string itemToAdd = textBox1.Text;
listBox1.Items. Add(itemToAdd);
}
}

[sbandalli]

I got to know the solution to the problem.Thank you all

[Plater]

If the textbox is truely empty, that is how to check for it, I suspect your problem might lie elsewhere.
Is this a web application? Are you remember to check for isPostback in your form_load?

[sbandalli]

Hello Plater, Thanks for the reply, I did get it to work. Its a WinForm application...T hanks again...

[Dököll]

While I am glad you got it working, it would be extremly friendly if posted how you did, for someone else looking, or passing by anyway:-)

            //It's probable adding textbox, checkbox, and other component items to a list will help minimize long if statements, if you have a number of these to do...
            if (this.txtCustomerID.Text == "")
            {

                MessageBox.Show("Please enter values in this Customer ID textbox", "Extreme Cinema TextBox Error");
                this.txtCustomerID.Focus();
                return;
            }