Use ID Already Exist

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Hi,

While i am click on submit button every time it show the Error is "User ID Already Exists. Please, Choose ID "

C#

protected void btnSubmit_Click(object sender, EventArgs e)
   {
       try
       {
           string dob = ddlmm.Text + "/" + ddldd.Text + "/" + ddlyyyy.Text;
           DataSet ds = new DataSet();
           custDB = new CustmomerDB();
           int success = 0;
           ds = custDB.CheckExistingUser(txtusername.Text);
          if (ds.Tables[0].Rows.Count > 0 && ds.Tables[0].Rows[0][9].ToString() == txtusername.Text)

           {
               success = 1;
               lblmsg.Visible = true;
               lblmsg.ForeColor = Color.Red;
               lblmsg.Text = "User Name Allready Exists. Choose Another UserName!";

           }
           else if (success == 0)
           {
               lblmsg.Visible = true;
               success = custDB.AddNewCustomer(txtcustid.Text.Trim(), txtfname.Text.Trim(), txtmname.Text.Trim(), txtlname.Text.Trim(), dob, ddlgender.Text, txtaddress.Text.Trim(), txtmobile.Text.Trim(), txtphone.Text.Trim(), txtusername.Text.Trim(), txtpwd.Text.Trim());
               lblmsg.Visible = true;
               lblmsg.ForeColor = Color.Green;
               lblmsg.Text = "New User Connection Added Succesfully !!";
           }
       }
       catch (Exception ex)
       {
           lblmsg.ForeColor = Color.Red;
         lblmsg.Text = "User ID Already Exists. Please, Choose ID !";

       }

Posted 10-Oct-12 19:04pm

Shiva from Bangalore, Karnataka

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haitrieu749 · Answer 1 · 2012-10-10T19:58:00

Because you catch general Exception, so if your code have any error in try{}, it catch error in catch{}, not identify the specific error. If you want to add new User,in SQL Management, you can set User ID is primary key, and set Properties: Identity Specification: Yes. Isdentity: Yes. Isdentity Increment:1. Identity Seed:1 .. And when you add new User, you don't interested in UserID. UserID will automatically create. And when you add new User, your code must be edit following:

success = custDB.AddNewCustomer( txtfname.Text.Trim(), txtmname.Text.Trim(), txtlname.Text.Trim(), dob, ddlgender.Text, txtaddress.Text.Trim(), txtmobile.Text.Trim(), txtphone.Text.Trim(), txtusername.Text.Trim(), txtpwd.Text.Trim());

And

txtcustid.Text.Trim(),

is not need.
P/s: sorry because of my english.

CodingLover · Answer 2 · 2012-10-10T19:07:00

Solution 1

Debug the code and see what the exception really tells you. Did you do that?

Check on following line,

C#

ds = custDB.CheckExistingUser(txtusername.Text);

Posted 10-Oct-12 19:07pm

CodingLover

Updated 10-Oct-12 19:08pm

v2

Mohd. Mukhtar · Answer 3 · 2012-10-10T19:20:00

Check the exception what error you are getting.

add below line in catch block.

C#

try
{
}
catch (Exception ex)
{
   lblmsg.ForeColor = Color.Red;
   lblmsg.Text = ex.StackTrace + "<br>User ID Already Exists. Please, Choose ID !";

}</br>

And after this you will be able to know what error you are getting here.

Use ID Already Exist

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