VB.net默认datagridview数据

Question

So I am have to set some default values in a datagridview, to do so I am using the following code, It is working but I am wondering if I can make the code shorter.

  Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
    WindowState = FormWindowState.Maximized

    'default values for diameterdata
    With DataDiameters
        .Rows.Add(6)
        .Rows(0).Cells(0).Value = "DN20"
        .Rows(0).Cells(1).Value = "21,7"
        .Rows(1).Cells(0).Value = "DN25"
        .Rows(1).Cells(1).Value = "28,5"
        .Rows(2).Cells(0).Value = "DN32"
        .Rows(2).Cells(1).Value = "37,2"
        .Rows(3).Cells(0).Value = "DN40"
        .Rows(3).Cells(1).Value = "43,1"
        .Rows(4).Cells(0).Value = "DN50"
        .Rows(4).Cells(1).Value = "54,4"
        .Rows(5).Cells(0).Value = "DN65"
        .Rows(5).Cells(1).Value = "70,3"
        .Rows(6).Cells(0).Value = "DN80"
        .Rows(6).Cells(1).Value = "82,5"
        .Rows(7).Cells(0).Value = "DN100"
        .Rows(7).Cells(1).Value = "107,1"

    End With


End Sub

Answer 1

Create a single array with all your elements. Then, loop through your DataGridView cells and set the values contained into the array.

Dim arrayItems() As String = {"DN20", "21,7", "DN25", "DN32", "37,2", "DN40", ......}
Dim indexArray As Integer = 0

    For i = 0 To 7
        For j = 0 To 1
            DataGridView1.Rows(i).Cells(j).Value = arrayItems(indexArray)
            indexArray += 1
        Next
    Next

Answer 2

  With DataDiameters
        .Rows.Add({"DN20", 21.7})
          etc
    End With

or like this if you want to keep everything as string

        With DataDiameters
            .Rows.Add({"DN20", "21,7"})
              etc
        End With

You will find easier to play with the gridview if you make your grid with actual code like this

 Dim arrayColumn(2) As String
        With DataDiameters
            .Columns.Add("DNmaat", "DN maat")
            .Columns.Add("InnerDiameter", "Inner Diameter")
            .Rows.Add({"DN20", 21.7})
            ' arraycolumn(0)="DN20"
            ' arraycolumn(1)="21,7"
            ' or like this .Rows.Add(arrayColumn)
            'This will let you dynamically change everything at runtime

        End With

On the long run, because your grid is not hard coded then you can change everything at runtime.