Index was out of range

Question

Trying to input a high setpoint, low setpoint, a % load, and number of compressors, then calculate the temp that all compressors are off. Then build a datagridview with the staging of compressors from all off to all on for each compressor up to 10 compressors. I am trying to insert headers from 1 to 10 compressors (Variable) with the text "Comp1", "Comp2", etc....Two rows with header. I am trying to use an array with index number to insert the text, but that is where my problem happens. "Index was out of range".

Here is my code

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim i As Integer, num1, num2, num3, num4, alloff As Single, stg As Single

        TextBox1.Focus()
        num1 = TextBox1.Text
        num2 = TextBox2.Text
        num3 = TextBox3.Text
        num4 = TextBox4.Text
        DGV1.RowCount = 2
        DGV1.ColumnCount = (TextBox4.Text + 1)
        ' name list
        Dim hname(11) As String
        hname(0) = "Mode"
        hname(1) = "Comp1"
        hname(2) = "Comp2"
        hname(3) = "Comp3"
        hname(4) = "Comp4"
        hname(5) = "Comp5"
        hname(6) = "COMP6"
        hname(7) = "COMP7"
        hname(8) = "Comp8"
        hname(9) = "Comp9"
        hname(10) = "Comp10"
        ' Add Headers

        DGV1.ColumnHeadersVisible = True
        For i = 1 To num4

            DGV1.ColumnCount = i
            DGV1.Columns(i).HeaderText = hname(i)
        Next

And a snapshot of the error........

Answer 1

TG,

It sounds like a parallel refrigeration system, but anyway...

It's hard to say because of how you're doing it, but do keep in mind that the rows are zero-based so the first one is zero and the last one is one less than the actual quantity.

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Please call me Frank :)

Answer 2

Try

For i = 0 to num4 - 1

DGV1.ColumnCount = i

DVG1.Columns(i).HeaderText = hname(i)

Next

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Ali Hamdar (alihamdar.com - www.ids.com.lb)

Answer 3

Thanks Frank,

I got it figured out by accident by removing the one statement that changed the column count from the original.

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Roger

Answer 4

Thanks Ali,

I got it figured out by accident by removing the one statement that changed the column count from the original.

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Roger