fetching data from SQL server and print it out using loop - vb.net

Question

I'm trying to fetch all the data rows in a sql server to print all the values. Here is the code I already tried but it still does not work. Can someone tell me what is wrong here? I'm quite new to vb.net
For i = 1 To 100
Dim testsection As String = e.Item.DataItem("sectionName")
e.Item.Cells(4).Text = strSection & testsection
Next
i dont quite understand how it fetch the data. i juz work as a fresh grad. but they already assign me this advance task. here is the codes in my DBFunction.
Public Function GetUserList(ByVal strUserLogin As String, ByVal strName As String, _
ByVal intCompanyID As Integer, ByVal tblName As String) As DataSet
Dim oConn As SqlConnection = Nothing
Dim SQLStr As String = ""
Dim SubSQL As String = ""
Dim CMD As SqlCommand = Nothing
Dim DS As New DataSet
Dim DA As New SqlDataAdapter
Try
oConn = New SqlConnection(ConnectionString)
oConn.ConnectionString = ConnectionString
oConn.Open()
CMD = oConn.CreateCommand
CMD.CommandType = CommandType.StoredProcedure
SQLStr = "sp_tblUser_Get"
'CMD.Parameters.Add("#CompanyID", SqlDbType.Int).Value = intCompanyID
CMD.Parameters.Add("#LoginID", SqlDbType.VarChar, 50).Value = strUserLogin
CMD.Parameters.Add("#Name", SqlDbType.VarChar, 50).Value = strName
'If strUserLogin <> "" Then
' SubSQL = " AND u.UserLogin = " & SQLS(strUserLogin)
'End If
'If intCompanyID <> 0 Then
' SubSQL = " AND u.CompanyId = " & SQLN(intCompanyID)
'End If
'SQLStr = "select u.ID, u.UserLogin, u.Name, c.CompanyName, u.CreateDate from tblUser u " & _
' " inner join tblCompany c on u.CompanyId = c.ID WHERE u.ID <> 0 " & SubSQL
CMD.CommandText = SQLStr
DA.SelectCommand = CMD
DA.Fill(DS, tblName)
CMD = Nothing
DA = Nothing
oConn.Close()
oConn = Nothing
Catch ex As System.Exception
DS = Nothing
Finally
If Not oConn Is Nothing Then
oConn.Close()
oConn = Nothing
End If
If Not CMD Is Nothing Then
CMD = Nothing
End If
End Try
Return DS
End Function

Answer 1

Basically lines from Dim oConn As SqlConnection = Nothing to DA.SelectCommand = CMD are used to create connection with the database and have steps to call procedure having name sp_tblUser_Get.
Then all the required parameters of this procedure are paased using lines
CMD.Parameters.Add("#LoginID", SqlDbType.VarChar, 50).Value = strUserLogin
CMD.Parameters.Add("#Name", SqlDbType.VarChar, 50).Value = strName
After that using SqlDataAdapter's Fill method data set is filled with the out put.
Dataset DS can contain single DataTable or multiple Datatables which depends on hot Stored procedure is written.
I am assuming it contains single datatable, then if you want to view data then in you can use.
DataTable dt= DS.Tables[0];
This dt Datatablw will contain all data.
To display that data you can use loop like mentioned below.
DataTable dt = DS.Tables[0];
foreach (DataRow dr in dt.Rows)
{
String Name = dr["FirstName"].ToString();
int Age = Convert.ToInt32(dr["Age"]);
}