Tutorial 1: Load listView using database in VB.net

Hi All,

Below is an example to load the listview, and i believe it may help to reduce the coding on it.

Step 1: Create a form, named it "Form1" and add a listview, named it "Listview1"


step 2: Configure the listview's look by choosing "Details".


step 3: Add the Some "columns' and a button, named it as "Button1". In this case, I add 4 columns which is to show the customer details


step 4: Add a class, named it as "LoadListView.vb".



step 5: Add the code to the LoadListview Class.

Imports System.Data.SqlClient

Public Class LoadListview

Public Sub loadlistview(ByVal cs As String, ByVal ColumnNum As Integer, _
ByVal listviewName As ListView, ByVal ssql As String, _
ByVal ColumnName() As String)

Dim columnData(8) As String
Dim lvi As ListViewItem
Dim command As New SqlCommand

Dim dr As SqlDataReader
Dim Conn As SqlConnection = New SqlConnection

Dim count As Integer
Dim i As Integer

listviewName.BeginUpdate()
'conn.Open()
Try

Conn.ConnectionString = cs
Conn.Open()

command = New SqlCommand(ssql, Conn)
dr = command.ExecuteReader

listviewName.Items.Clear() 'Clear the listview before adding

While dr.Read()
For i = 0 To ColumnNum
columnData(i) = dr.GetValue(dr.GetOrdinal(ColumnName(i))).ToString
Next

lvi = New ListViewItem(columnData)
listviewName.Items.Add(lvi)
count = count + 1

End While
listviewName.EndUpdate() 'End of updating

Catch ex As Exception
MsgBox(ex.Message)
Finally
If Conn.State = ConnectionState.Open Then Conn.Close() 'Close the database connection if it is still open
End Try
End Sub

End Class
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Explaination:
CS = Connection String for database
ColumnNum = No of column(count from 0, if I had 4 columns so i will only write 3)
ListviewName = Name of your listview(In my case is "ListView1")
ssql = SQL statement
ColumnName() = Array of the database column name, which are going to show at the list view

Step 6: Add the Code to "Form1.VB"

Public Class Form1

Private connString As String = "Data Source=IBM-PC\SQLEXPRESS;Initial Catalog=CustomerSystem;Persist Security Info=True;User ID=CUST;Password=CUST"

Private LLV As New LoadListview


Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim sql As String = "select * from custmaster"
Dim colname() As String = {"company", "custcode", "telephone", "address"}

LLV.loadlistview(connString, 3, ListView1, sql, colname)
End Sub
End Class

Step 7: Click the Button1 to see the result


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End of the Example

From the given code, you can try to change to suit your purpose.

Please leave comment, if you like it.