Comparing Rows of Table's

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hello friends,

i want to compare a single row of one table with multiple rows of other table and if that single row is present in other table's rows then it should give a message that record already existed.

i want to achieve this in vb and i dont have any idea how to accomplish this anyone has any sample code of how to do this in vb.

please needed help

Posted 24-Aug-13 1:44am

sachin bhise

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Mahesh Bailwal 24-Aug-13 8:21am

are you talking about database table or ADO.Net datatable?

sachin bhise 25-Aug-13 2:23am

mahesh m talking about ado.net datatable

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abbaspirmoradi · Answer 1 · 2013-08-24T02:47:00

Try this:

For Each dr As DataRow In FirstDataTable.Rows

	Dim results As System.Data.EnumerableRowCollection(Of System.Data.DataRow) = From myRow In SecondDataTable.AsEnumerable() Where (myRow.Field(Of String)("Id").Trim() = dr("Id").ToString().Trim())myRow

	If results.ToList().Count <> 0 Then


		MessageBox.Show("Row Exist")

	End If
Next