how to put trappings in my code not to save an existing activityname

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1.00/5 (1 vote)

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VB.NET

If ValidateData() = False Then
          Exit Sub
      End If
      If UpdateData() Then
          If MyMode = "Add" Then

              MsgBox("New Activity Added Successfully !", CType(vbInformation + vbOKOnly, MsgBoxStyle), "Update Status")
              PopulateList()
              ClearMyCtls()
              txtStudentID.Text = GetNextPrimaryKey(con, "Activity", "Activity_ID").ToString("######000")
              txtStudentID.Focus()

              Exit Sub
          End If

Posted 13-Jan-16 3:13am

ElLo25

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ZurdoDev 13-Jan-16 9:18am

What is a trapping? Please explain your question much more clearly.

ElLo25 13-Jan-16 9:21am

an error message that will pop-up for example activity already exist and it will automatically not save to database

ZurdoDev 13-Jan-16 9:26am

Sounds like that should be part of your ValidateData method. Validate whether or not the record exists.

ElLo25 17-Jan-16 20:08pm

how?

ZurdoDev 17-Jan-16 21:19pm

How what exactly? Do you know how to write code to access a database? If not, you can use the SqlConnection and the SqlCommand objects. Many examples online.

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ZurdoDev · Answer 1 · 2016-01-14T03:04:00

Solution 1

As mentioned in comments, I suggest you call into your db during your Validate method to determine if the record exists or not. Then handle from there.

Posted 14-Jan-16 3:04am

ZurdoDev