This is my code.Here Instead of query string can i use view.
plz reply me.


Protected Sub btnchk_name_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnchk_name.Click
Dim str As String = "select ID from table1 where ID = '" & txtid.Text & "'"
Dim con As String = ConfigurationManager.AppSettings("preeconn")
Dim com As New SqlCommand(str, New SqlConnection(con))
com.Connection.Open()
Dim da As New SqlDataAdapter(str, con)
Dim dr As SqlDataReader
dr = com.ExecuteReader 'where sqldatareader ain't run without using
If Not dr.Read() Then
datagrid.datasource=com.executereader()
datagrid.databind()
End If
End Sub

Can you pls explain your objective first. I cant get it form you code. I have made some comments in your code. Can u pls explain those things

Protected Sub btnchk_name_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnchk_name.Click
Dim str As String = "select ID from table1 where ID = '" & txtid.Text & "'"
Dim con As String = ConfigurationManager.AppSettings("preeconn")
Dim com As New SqlCommand(str, New SqlConnection(con))
com.Connection.Open()

Dim da As New SqlDataAdapter(str, con)
' I cant see you using this object anywhere
Dim dr As SqlDataReader
dr = com.ExecuteReader 'where sqldatareader ain't run without using

' Are you sure this is the condition you really meant to give
If Not dr.Read() Then

datagrid.datasource=com.executereader()
' When you already have the result of your query in the sqldatareader object, why are u executing the same query the again, you could have used the same old object
datagrid.databind()

End If
End Sub

Can you pls explain your objective first. I cant get it form you code. I have made some comments in your code. Can u pls explain those things

Protected Sub btnchk_name_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnchk_name.Click
Dim str As String = "select ID from table1 where ID = '" & txtid.Text & "'"
Dim con As String = ConfigurationManager.AppSettings("preeconn")
Dim com As New SqlCommand(str, New SqlConnection(con))
com.Connection.Open()

Dim da As New SqlDataAdapter(str, con)
' I cant see you using this object anywhere
Dim dr As SqlDataReader
dr = com.ExecuteReader 'where sqldatareader ain't run without using

' Are you sure this is the condition you really meant to give
If Not dr.Read() Then

datagrid.datasource=com.executereader()
' When you already have the result of your query in the sqldatareader object, why are u executing the same query the again, you could have used the same old object
datagrid.databind()

End If
End Sub

Actually my question is can we use views instead of query in our code.

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