Implementing a Variable in a Label Name in VB? - vb.net

Question

I currently have a huge IF statement and want to minimize it as much as possible.
I have a datagrid that i am populating from a SQL query and then from this datagrid i am passing the values into seperate labels.
I am able to create a For Each Loop in which i cycle through the variables looking until a counter reaches 7. However the problem arises when i need to incremente the Label name values by one. Each time, so essentially i need to add a counter variable into the Label name.
The code that i need to minimize is:
result73 = DataGridView1.Rows(0).Cells(0).Value.ToString
result74 = DataGridView1.Rows(0).Cells(1).Value.ToString
result75 = DataGridView1.Rows(1).Cells(0).Value.ToString
result76 = DataGridView1.Rows(1).Cells(1).Value.ToString
result77 = DataGridView1.Rows(2).Cells(0).Value.ToString
result78 = DataGridView1.Rows(2).Cells(1).Value.ToString
result79 = DataGridView1.Rows(3).Cells(0).Value.ToString
result80 = DataGridView1.Rows(3).Cells(1).Value.ToString
result81 = DataGridView1.Rows(4).Cells(0).Value.ToString
result82 = DataGridView1.Rows(4).Cells(1).Value.ToString
result83 = DataGridView1.Rows(5).Cells(0).Value.ToString
result84 = DataGridView1.Rows(5).Cells(1).Value.ToString
result85 = DataGridView1.Rows(6).Cells(0).Value.ToString
result86 = DataGridView1.Rows(6).Cells(1).Value.ToString
result87 = DataGridView1.Rows(7).Cells(0).Value.ToString
result88 = DataGridView1.Rows(7).Cells(1).Value.ToString
If result73 = "Monday" Then
DaySalesLbl1.Text = result74
ElseIf result73 = "Tuesday" Then
DaySalesLbl2.Text = result74
ElseIf result73 = "Wednesday" Then
DaySalesLbl3.Text = result74
ElseIf result73 = "Thursday" Then
DaySalesLbl4.Text = result74
ElseIf result73 = "Friday" Then
DaySalesLbl5.Text = result74
ElseIf result73 = "Saturday" Then
DaySalesLbl6.Text = result74
ElseIf result73 = "Sunday" Then
DaySalesLbl7.Text = result74
End If
This If Statement goes on for each variable that is declared above.
The Loop I have created looks something like this:
Dim cou As Integer
Dim n As Integer
cou = 0
n = 1
Do Until result74 <> ""
If result73 = cou Then
DaySalesLbl +n = result74
End If
cou = cou + 1
n = n + 1
Loop
But the section DaySalesLbl +n = result74 brings an Error because it looks for a generated method.

Answer 1

If, as I suspect, this is a WinForm project, then you can access the controls by name using the Form.Controls collection, like this:
Dim cou As Integer
Dim n As Integer
cou = 0
n = 1
Do Until result74 <> ""
If result73 = cou Then
Dim l As Label = CType(Me.Controls("DaySalesLbl" & n), Label)
l.Text = result74
End If
cou = cou + 1
n = n + 1
Loop
The Controls collection contains all the controls that are direct children of the form. You can access them by index (e.g. Me.Controls(0)), or by name (e.g. Me.Controls("DaySalesLbl6")). However, the collection stores the list as the base Control type, so you have to cast it to a the specific type before accessing the specific properties. That is why the CType(..., Label) is there in the example.

Answer 2

I would write code as follows:
For i as Integer = 0 to 7
Select Case DataGridView1.Rows(i).Cells(1).Value.ToString
Case "Monday"
Me.Controls("DaySalesLbl" & i+1).Text = DataGridView1.Rows(i).Cells(2).Value.ToString
Case "Tuesday"
Me.Controls("DaySalesLbl" & i+2).Text = DataGridView1.Rows(i).Cells(2).Value.ToString
... etc ...
I did this without the IDE, so I hope I didn't mess anything up, but I hope this sets you in the right direction and helps.