Updating database from data in Gridview in VB - vb.net

Question

This is the code for displaying data from database to gridview....If i am doing any changes in GridView and it has to update in database...I dont know how to do it...Can anyone help me....
Dim DBCONSRT, QRYSTR As String
Dim strSQL As String
Dim DBCON, myConn, myCommand, rs As Object
Dim NoOfRecords As Long
rs = CreateObject("ADODB.Recordset")
Const DB_CONNECT_STRING = "Provider=MSDASQL.1;Persist Security Info=False;User ID=cpa5k;Data Source=NP1;DSN=NP1;UID=cpa5k;PASSWORD=pass;SDSN=Default;HST=ibslnpb1.sysplex.homedepot.com;PRT=4101;Initial Catalog=QA1MM;"
myConn = CreateObject("ADODB.Connection")
myCommand = CreateObject("ADODB.Command")
myConn.Open(DB_CONNECT_STRING)
myCommand.ActiveConnection = myConn
strSQL = "select * from QA1MM.STRSK_OH FETCH FIRST 10 ROWS ONLY with ur;"
rs.Open(strSQL, myConn)
Dim myDA As OleDb.OleDbDataAdapter = New OleDb.OleDbDataAdapter
Dim myDS As DataSet = New DataSet
myDA.Fill(myDS, rs, "MyTable")
DataGridView1.DataSource = myDS.Tables(0)
DataGridView1.Refresh()
myConn.Close()
I am trying this method.but it is not working
Dim myDA As OleDb.OleDbDataAdapter = New OleDb.OleDbDataAdapter
Dim myDS As DataSet = New DataSet
myDA.Fill(myDS, rs, "MyTable")
ds = DataGridView1.DataSource
myDA.Update(ds)
I changed like this:
Dim DBCONSRT, QRYSTR As String
Dim strSQL As String
Dim DBCON, myConn, myCommand, rs As Object
Dim ds As DataSet = New DataSet
rs = CreateObject("ADODB.Recordset")
Const DB_CONNECT_STRING = "Provider=MSDASQL.1;Persist Security Info=False;User ID=cpa5k;Data Source=NP1;DSN=NP1;UID=cpa5k;PASSWORD=mexico13;SDSN=Default;HST=ibslnpb1.sysplex.homedepot.com;PRT=4101;Initial Catalog=QA1MM;"
myConn = CreateObject("ADODB.Connection")
myCommand = CreateObject("ADODB.Command")
myConn.Open(DB_CONNECT_STRING)
myCommand.ActiveConnection = myConn
Dim myDA As SqlClient.SqlDataAdapter = New SqlClient.SqlDataAdapter
Dim myDS As DataSet = New DataSet
Dim dtable As DataTable = New DataTable()
myDA.UpdateCommand = New SqlClient.SqlCommand("UPDATE QA1MM.STRSK_OH set OH_QTY = 10 WHERE SKU_NBR = 108011", myConn)
' myDA.UpdateCommand.Parameters.Add("#OH_QTY", OleDb.OleDbType.VarChar, 15, "OH_QTY")
' myDA.UpdateCommand.Parameters.Add("#SKU_NBR", OleDb.OleDbType.VarChar, 15, "SKU_NBR")
' myDA.UpdateCommand.Parameters(0).SourceVersion = DataRowVersion.Current
' myDA.UpdateCommand.Parameters(1).SourceVersion = DataRowVersion.Current
dtable = DataGridView1.DataSource
myDA.Update(dtable)
myConn.Close()
But it is giving error like "Unable to cast COM object of type 'System.__ComObject' to class type 'System.Data.SqlClient.SqlConnection'. Instances of types that represent COM components cannot be cast to types that do not represent COM components; however they can be cast to interfaces as long as the underlying COM component supports QueryInterface calls for the IID of the interface."
I changed the connection string like:
Provider=MSDASQL.1;Persist Security Info=False;Data
Source=NP1;DSN=NP1;SDSN=Default;HST=ibslnpb1.sysplex.homedepot.com;PRT=4101;Integrated
Security = True;Initial Catalog=QA1MM;
Its not working.The error is "Multiple-step OLE DB operation generated errors. Check each OLE DB status value, if available. No work was done.".....Sorry i dont know how to change.....

Answer 1

You write like follow
myConn.Open(DB_CONNECT_STRING)
myDA.Update(ds.Tables(0))
myConn.Close()
EDIT:
Dont take the datasource of DataGridView1 into a dataset, instead take into a DataTable as follows
Dim dtable As New DataTable()
dtable = DataGridView1.DataSource
and update the table with DataAdapter as
myConn.Open(DB_CONNECT_STRING)
myDA.Update(dtable)
myConn.Close()
Refer to this link How to write UpdateCommand to OleDBDataAdapter

Answer 2

Try this:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
DataSet1.Tables("employee").AcceptChanges()
Dim i As Integer
Dim cmdbuilder As New OdbcCommandBuilder(odbcadptr)
i = odbcadptr.Update(odbcds, "customer")
MsgBox("Updated Rows: " & i)
End Sub