Filling a DataGridView from SQLReader
datagridview, sqldatareader, vb.net-2010
Solution
You can't bind a datareader directly to a datagridview in WinForms. Instead you could load a datatable with your reader and assign the datatable to the datasource of the DataGridView
Dim dt = new DataTable()
dt.Load(reader)
DataGridView1.AutoGenerateColumns = True
DataGridView1.DataSource = dt
DataGridView1.Refresh()
Problem
Im a little stuck on some code that im writing An outline is that i am reading some data in from an SQL database and wantint to display it in a DataGridView on a form. I have confirmed that there is data being returned from the database but am unsure as to why this isnt appearing. I have followed a number of tutorials from the internet but so far non have worked here is my code ``` Private Sub PopulateGrid() Dim Con As New SqlClient.SqlConnection Dim strCon As String = CropTrackMod.strConn Dim strCommand As String = "select * from customer" Try Con.ConnectionString = strCon Dim Cm As New SqlClient.SqlCommand(strCommand, Con) Con.Open() Dim reader As SqlClient.SqlDataReader = Cm.ExecuteReader() 'test to confirm data received reader.Read() MsgBox(reader.Item("ContactName")) DataGridView1.AutoGenerateColumns = True DataGridView1.DataSource = reader DataGridView1.Refresh() Catch ex As Exception MessageBox.Show(ex.Message, "Error") Finally If Con.State = ConnectionState.Open Then Con.Close() End If End Try End Sub ``` i have also tried to implement a datatable but receive a conversion error on the data type any help would be appreciated thanks guys