How to Use forloop inside the list of sqlparameter? - asp.net

Question

How to add my data gridview value into database i m using dal my code is this
Dim list As New List(Of SqlParameter)
For each row as DataGridView In DataGridView1.Rows
If row.cell(0).value isnot nothing
Qry="insert into sale1(Description)values(#1)"
With list
.add(new Sqlparameter("#1",row.cells(2).value)
End with
End if
Next

Answer 1

If you don't want to do as #jmcilhinney suggested in comments (the best way), this should work as closest to the code you provided but it does not separate database code form user interface code.
The idea is to add the parameter once outside the loop and then just change the value in the loop. I had to guess at the datatype and size of the parameter. Please check your database and correct the code.
Private Sub OPCode2()
Using cn As New SqlConnection("Your connection string"),
cmd As New SqlCommand("insert into sale1 (Description)values(#1)", cn)
cmd.Parameters.Add("#1", SqlDbType.NVarChar, 300)
cn.Open()
For Each row As DataGridViewRow In DataGridView1.Rows
If row.Cells(0).Value IsNot Nothing Then
cmd.Parameters("#1").Value = row.Cells(2).Value
cmd.ExecuteNonQuery()
End If
Next
End Using
End Sub
To separate the code...
Private Sub UICode()
Dim lst As New List(Of String)
For Each row As DataGridViewRow In DataGridView1.Rows
If row.Cells(0).Value IsNot Nothing Then
lst.Add(row.Cells(2).Value.ToString)
End If
Next
UpdateDatabase(lst)
End Sub
Private Sub UpdateDatabase(lst As List(Of String))
Using cn As New SqlConnection("Your connection string"),
cmd As New SqlCommand("insert into sale1 (Description)values(#1)", cn)
cmd.Parameters.Add("#1", SqlDbType.NVarChar, 300)
cn.Open()
For Each s As String In lst
cmd.Parameters("#1").Value = s
cmd.ExecuteNonQuery()
Next
End Using
End Sub