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Vb.net | how to summary gridviewdata to another gridviewdata

jreypalars asked:

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Hi All, could you help, summary the data in DGview1 to DGview2. here's my table.

Name	Hours
Name1	1
Name1	1
Name1	2
Name1	3
Name1	1
Name2	3
Name2	3
Name2	3


Expected output:
Name	Hours
Name1	8
Name2	9


What I have tried:

I used, for loop on the first but not the expected output.

For util As Integer = 0 To DataGridView1.RowCount - 2
        If DataGridView1.Rows(util).Cells(0).Value = "Name1" Then
        Dim totalUtil As Double
        totalUtil += Convert.ToDecimal(DataGridView1.Rows(util).Cells(5).Value)
        DataGridView4.Rows.Add(DataGridView1.Rows(util).Cells(0).Value, totalUtil)
        End If
        Next


Output:
Name Hours
Name1 1
Name1 2
Name1 5
Name1 11
Name1 so on..
Name2 so on..
Tags: VB.NET

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