[tumelo]

private void button1_Click(object sender, EventArgs e)
		{
			//number btw 1 and 40 taken as a valid number.
			int num = int.Parse(textBox1.Text);

			if (num < 1 && num > 40)
			{
				errorProvider1.SetError(textBox1, "number not valid");
				textBox1.Focus();
				textBox1.SelectAll();			   
			}

			else
			{
			errorProvider1.SetError(textBox1,"");
			}	   
	   
		}

[tumelo]

//here is my code.

        private void button1_Click(object sender, EventArgs e)
        {
            //number btw 1 and 40 taken as a valid number.
            int num = int.Parse(textBox1.Text);

            if (num < 1 && num > 40)
            {
                errorProvider1.SetError(textBox1, "number not valid");
                textBox1.Focus();
                textBox1.SelectAll();               
            }

            else
            {
            errorProvider1.SetError(textBox1,"");
            }       
       
        }

Please use code tags when posting your code, like

This post has been edited by PsychoCoder: 10 March 2008 - 06:01 AM

[PsychoCoder]

You are making things harder on yourself than they have to be, take a look into the RangeValidator Control, it will do your validating for you.

By the way, is the code you posted not working? Do you receive an error?

[Nykc]

Hello Tumelo, welcome to Dream.In.Code! Since this forum is for introductions only it probably won't yield much of a result. Please post your question in the appropriate forum so someone can assist you.

Please use

[thehat]

Shouldn't that if have an OR rather than AND?

 if (num < 1 || num > 40)

[WolfCoder]

Welcome to Dreamscode

I would like to know more about yous for coming here~

[Jayman]

Topics merged. Please do not create duplicate topics.