how to read string(name) from database

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SQL-Server-2008R2

VB

dim idname as string
idsql = "select * from xyz "
        With cmd
            dr = .ExecuteReader
        End With

        If dr.HasRows = True Then
            Do While dr.Read
                idname = dr!fname
            Loop
            dr.Close()
        End If

Posted 29-Nov-14 20:32pm

lakshjoshi

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lakshjoshi 30-Nov-14 3:04am

idname = dr!fname//throwing error: indexoutofrangeexception

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OriginalGriff · Answer 1 · 2014-11-29T20:36:00

Solution 1

Try this:

VB

Using con As New SqlConnection(strConnect)
	con.Open()
	Using com As New SqlCommand("SELECT fname FROM xyz", con)
		Using reader As SqlDataReader = com.ExecuteReader()
			While reader.Read()
				Dim fname As String = DirectCast(reader("fname"), String)
				Console.WriteLine(fname)
			End While
		End Using
	End Using
End Using

Posted 29-Nov-14 20:36pm

OriginalGriff

Comments

lakshjoshi 30-Nov-14 2:46am

Dim fname As String = DirectCast(reader("fname"), String)//throwing error: indexoutofrangeexception

OriginalGriff 30-Nov-14 3:27am

And what columns do you have in your "xyz" table?

lakshjoshi 30-Nov-14 3:55am

only fname

OriginalGriff 30-Nov-14 4:19am

Double check: make sure it'e the right table name, make sure it's the right database, and check that it's the right name = no underscores, no spaces.
Because when I use that code with the correct values locally, it works!