千位分隔符无法正常工作

Question

I want to display 200000 as 200.000, by set DefaultCellStyle

dgrTonKho.Columns["xtkTTN"].DefaultCellStyle.Format = "0,.###";

but when dispay it just like 200, all zero after the separator has been removed, I don't know why

Answer 1

Try this:

dgrTonKho.Columns["xtkTTN"].DefaultCellStyle.Format = "#,0.###";

From MSDN:

Thousand separator specifier: If one or more ',' characters is specified between two digit placeholders (0 or #) that format the integral digits of a number, a group separator character is inserted between each number group in the integral part of the output.

Thousand separator must be between two digit placeholders

Answer 2

You can dynamically parse the cellvalue

 this.dgrTonKho.CellFormatting += new DataGridViewCellFormattingEventHandler(dgrTonKho_CellFormatting);

add cellformatting event and try to parse the cell value dynamically it will do the job

 void dgrTonKho_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
        {
            if (e.ColumnIndex == 0 && e.RowIndex != this.dgrTonKho.NewRowIndex)
            {
                double d = double.Parse(e.Value.ToString());
                e.Value = d.ToString("0.00##");
            }
        }