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Help with checking if a textbox contains a value or space and if value is between 0 and 255

Posted By:      Posted Date: October 28, 2010    Points: 0   Category :Windows Application


I am new to C# and in need of some help regarding checking the value of textboxes or if the value is between 0 and 255. I have managed to resolve the issues separately but not togeather. The code is as follows


    public partial class Form1 : Form
        int red, green, blue;
        public Form1()

        private void button1_Click(object sender, EventArgs e)
            Graphics papper;

            if (textBox1Red.Text == String.Empty)
                MessageBox.Show("Värdet för " + "Röd" + " får ej vara tomt");


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