Issue of repeating values in textbox separated by comma

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Hello Everyone,
I have a grid view in which a template field with text boxes are present. My issue is when i write a string with repeated values like ab,ab,cf,hj like this then a message should show.
I have used a custom validator for it,but it is not working.
My code is

C#

protected void CustomValidator5_ServerValidate(object source, ServerValidateEventArgs args)
 {

     CustomValidator cv = (CustomValidator)source;
     GridViewRow gvr = (GridViewRow)cv.NamingContainer;
     CheckBox chk = (CheckBox)gvr.FindControl("CheckBox1");
     TextBox txt1 = (TextBox)gvr.FindControl("TextBox2");
     TextBox txt2 = (TextBox)gvr.FindControl("TextBox6");
     TextBox txt3 = (TextBox)gvr.FindControl("TextBox3");
     Label lab = (Label)gvr.FindControl("Label1");
     string serials = txt2.Text;
     string[] sl = serials.Split(',');
     if (chk.Checked == true)
     {
         if (txt1.Text != "")
         {
             using (SqlCommand comm = new SqlCommand("select [Serial_Number_Required] from Products where Product=@Product ", con))
             {
                 con.Open();
                 //string Role = (string)(Session["Role"]);
                 // 2. define parameters used in command object
                 SqlParameter para = null;
                 para = new SqlParameter();
                 para.ParameterName = "@Product";
                 para.Value = lab.Text;
                 comm.Parameters.Add(para);

                 //Pass @Pages parameter

                 SqlDataReader reade = comm.ExecuteReader();
                 while (reade.Read())
                 {
                     Session["Serial_Number_Required"] = Convert.ToString(reade["Serial_Number_Required"]);
                 }
                 con.Close();
                 //Button Add = (Button)PreviousPage.FindControl("Button2");
                 if (Session["Serial_Number_Required"].ToString() == "Y")
                 {
                     for (int i = 0; i < sl.Length; i++)
                     {
                         for (int j = i + 1; j < sl.Length; j++)
                         {
                             if (sl[i].ToString() == sl[j].ToString())
                             {
                                 args.IsValid = false;
                             }
                             else
                             {
                                 args.IsValid = true;
                             }
                         }
                     }

                 }
             }

         }

     }
 }

ASP.NET

<asp:CustomValidator ID="CustomValidator5" runat="server" ErrorMessage="Enter unique serialNo."
OnServerValidate="CustomValidator5_ServerValidate" ValidateEmptyText="true"
ControlToValidate="TextBox2" Display="Dynamic"
style="font-size: x-small; font-family: Verdana" ValidationGroup="txt"
Font-Bold="True" ForeColor="Red"></asp:CustomValidator>

Posted 25-Sep-14 23:07pm

Member 10578683

Updated 25-Sep-14 23:18pm

ChauhanAjay

v3

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2 solutions

Solution 2

If you're using .net 3.5 and above:

C#

sl = (string[])sl.Distinct().ToArray(typeof(string));

This way you're only processing distinct values

If it is important to warn the user, then you create new Array and compare length of sl and this new array.

C#

String[] sl_distinct = (string[])sl.Distinct().ToArray(typeof(string));
if (sl.length != sl_distinct.length){
// your message
}

Posted 26-Sep-14 0:25am

Sinisa Hajnal

Updated 26-Sep-14 0:28am

v4

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anup.bhunia · Accepted Answer · 2014-09-25T23:46:00

C#

for (int i = 0; i < sl.Length; i++)
                        {
                            for (int j = i + 1; j < sl.Length; j++)
                            {
                                if (sl[i].ToString() == sl[j].ToString())
                                {
                                    args.IsValid = false;
//you should break the loop here
break;
                                }
                                else
                                {
                                    args.IsValid = true;
                                }
                            }
//if already match found break from here as well
if(args.IsValid == false) break;

                        }