Question

I’m getting a frustrating error that I’m pretty sure is something simple, but I cannot figure out what.

Here is my function:

public void setDistanceCellValue(int value, int row, int column)
{
    try
    {
        Console.WriteLine("Row: " + row + " Column: " + column + " Value: " + value);
                logGrid.Rows[row].Cells[column].Value = value.ToString();
    }
    catch (Exception ex)
    {
            MessageBox.Show(string.Format("An error occurred: {0}" + "\r\n" + "\r\n" + "Row: " + row + " Column: " + column + " Value: " + value, ex.Message));
    }
}

Where the logGrid value setting line is what is erroring out with “Index is out of range. Must be non-negative and less than the size of the collection. Parameter name: index.”

I’ve been checking and checking and my grid has six rows and 8 columns, and the function is getting called on say row 2 column 3 (hence all the debugging code). For the life of my I can’t figure out why it is saying I’m using a negative index or an index large than 5 for the e.rowIndex or 7 for e.columnIndex.

Help me if you can.

Answer 1

The indexes range from 0 to N-1, not from 1 to N.

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EDIT:

Two suggestions

1. Add additional debugging code before your existing Console.WriteLine

   Console.WriteLine("Row Count: {0}", logGrid.Rows.Count);
   Console.WriteLine("Cell Count: {0}", logGrid.Rows[row].Cells.Count);

1. Check the AutoGenerateColumns property to see if it set as you expected.