Search option : There is no row at position 3

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I want to display records in Textboxs from the database, by searching.. I given 6 Textboxs for the output display, but I'm getting an error while searching" There is no row at position 3", If there is no records in position 3, then it should display Zero value in that following textbox.
Please find the below code and help me

VB

Dim con As New OleDb.OleDbConnection
       con.ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" & Application.StartupPath & "\dbexport.accdb;Persist Security Info=False;"
       con.Open()
       Dim dt As New DataTable


       Dim rs As New OleDb.OleDbDataAdapter("Select * from QA_db where eNB_Name Like '%" & search_box.Text & "%' ", con)
       rs.Fill(dt)


       '/// Display Search data feilds in textbox //

      EUtran1_txt.Text = dt.Rows(0).Item("EUtranCellFDD_Name")
      EUtran2_txt.Text = dt.Rows(1).Item("EUtranCellFDD_Name")
      EUtran3_txt.Text = dt.Rows(2).Item("EUtranCellFDD_Name")
      EUtran4_txt.Text = dt.Rows(3).Item("EUtranCellFDD_Name")
      EUtran5_txt.Text = dt.Rows(4).Item("EUtranCellFDD_Name")
      EUtran6_txt.Text = dt.Rows(5).Item("EUtranCellFDD_Name")

       rs.Dispose()

       con.Close()

Posted 27-Dec-14 19:36pm

Member 11338695

Updated 28-Dec-14 4:26am

Maciej Los

v2

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2 solutions

Solution 2

You can also try something like:

VB

For row as Integer = 0 to dt.Rows.Count - 1
   GetTextBoxForRow(row).text = dt.Rows(row).Item("EUtranCellFDD_Name")
Next

Function GetTextBoxForRow(ByVal rowNumber as Integer) as TextBox
     Select Case rowNumber

        Case 0 : return EUtran1_txt
        Case 1 : return EUtran2_txt
        Case 2 : return EUtran3_txt
        Case 3 : return EUtran4_txt
        Case 4 : return EUtran5_txt
        Case 5 : return EUtran6_txt

     End Select
End Function

In this solution the loop will run for the only available number of rows.

Posted 29-Dec-14 10:30am

Shahan Ayyub

Updated 29-Dec-14 10:34am

v3

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OriginalGriff · Accepted Answer · 2014-12-27T20:18:00

Solution 1

So check the Rows.Count property...

VB

If DT.Rows.Count >0 Then
   EUtran1_txt.Text = dt.Rows(0).Item("EUtranCellFDD_Name")
End If
...

repeat for each row, with the appropriate count and row number.

Posted 27-Dec-14 20:18pm

OriginalGriff

Comments

Member 11338695 28-Dec-14 2:59am

I repeated the code for each row, If the records have 6 then it showing result, if it has 3 records at that time for "EUtran4_txt.Text" showing error "There is no row at position 3."

If dt.Rows.Count > 0 Then
Me.EUtran1_txt.Text = dt.Rows(0).Item("EUtranCellFDD_Name")
End If
If dt.Rows.Count > 0 Then
Me.EUtran2_txt.Text = dt.Rows(1).Item("EUtranCellFDD_Name")
End If
If dt.Rows.Count > 0 Then
Me.EUtran3_txt.Text = dt.Rows(2).Item("EUtranCellFDD_Name")
End If
If dt.Rows.Count > 0 Then
Me.EUtran4_txt.Text = dt.Rows(3).Item("EUtranCellFDD_Name")
End If
If dt.Rows.Count > 0 Then
Me.EUtran5_txt.Text = dt.Rows(4).Item("EUtranCellFDD_Name")
End If
If dt.Rows.Count > 0 Then
Me.EUtran6_txt.Text = dt.Rows(4).Item("EUtranCellFDD_Name")
End If

DamithSL 28-Dec-14 3:09am

If dt.Rows.Count > 0 Then
Me.EUtran1_txt.Text = dt.Rows(0).Item("EUtranCellFDD_Name")
End If
If dt.Rows.Count > 1 Then
Me.EUtran2_txt.Text = dt.Rows(1).Item("EUtranCellFDD_Name")
End If

you need to increase the value in if condition

Member 11338695 28-Dec-14 3:16am

Thankyou Verymuch its working... :)

OriginalGriff 28-Dec-14 3:28am

You're welcome!