C determines whether multiple text box input values in a page have a repeated implementation

This article gives an example of C# to determine whether the input value of multiple text boxes in the page has a repeated implementation method, to share for your reference. Specific implementation methods are as follows:

List<string> list = new List<string>();// First of all define 1 A generic array 
// So let's say there is 4 A text box 
string mainseat = this.textBox1.Text;

string nextseat = this.textBox2.Text;

string storeseat1 = this.textBox3.Text;

string storeseat2 = this.textBox4.Text;

if (mainseat != "")

{

     list.Add(mainseat);

}

if (nextseat != "")

{

      list.Add(nextseat);

}

if (storeseat1 != "")

{

      list.Add(storeseat1);

}

if (storeseat2 != "")

{

       list.Add(storeseat2);

}     

if (list.Distinct().Count<string>() != list.Count)// Checks the array for duplicate elements 

{

       // Now there is repetition 

}           

else
       // There is no duplication 

Hopefully this article has helped you with your C# programming.