datagridview vb.net中的奇怪单元格格式问题

Question

I have a datagridview that when I use the following code:

DataGridView1.Rows(RowNum).Cells("TotalTime").Value = "12:34:--"

I would expect the display to show "12:34:--" in the grid cell, but instead for some reason it displays "--:12:34" in the cell. I have tried all kinds of things and it appears the problem is with the "--" (two hyphens). If I try this code:

DataGridView1.Rows(RowNum).Cells("TotalTime").Value = "12:34:00" 

It works perfect and the display is "12:34:00" as you would expect. Does anyone have any ideas why this is?

Answer 1

Works for me.

    DataGridView1.Columns.Add("Col1", "TotalTime")
    Dim RowNum As Integer = 0
    DataGridView1.Rows(RowNum).Cells("Col1").Value = "12:34:--"

Answer 2

清除列中的所有格式，然后重试。