是否可以在 DataGridView int 列中显示空字符串而不是 0? [英] Is it possible to display empty string instead of 0 in DataGridView int columns?

问题描述

我有一个数据表，其中包含有关音轨的信息.存储轨道编号的 DataTableColumn 是 UInt32 类型，因此当我在 DataGridView 中显示 DataTable 时，我可以按该列对数据进行排序.对于没有曲目编号的曲目，我在 DataTable 中得到了 0.

I have a DataTable filled with information about audio tracks. DataTableColumn that stores the track number is of a UInt32 type so when I display the DataTable in DataGridView, I'm able to sort data by that column. For tracks when there is no track number I've got 0 in DataTable.

data.Tables["active"].Columns["Track"].DataType = Type.GetType("System.UInt32");

是否可以将 DataGridView 中该列中的每个 0 显示为空字符串(无)?但是仍然将其存储为 UInt32 0 在 DataTable 中以便能够对曲目进行排序?

Is it possible to display every 0 in that column in DataGridView as an empty string (nothing)? But still have it stored as UInt32 0 in DataTable to be able to sort the tracks?

推荐答案

当然，您可以使用 CellFormatting 事件:

Sure, you can use the CellFormatting event:

private void dataGridView1_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
{
    if (dataGridView1.Columns[e.ColumnIndex].DataPropertyName == "Track")
    {
        uint value = (uint)e.Value;
        if (value == 0)
        {
            e.Value = string.Empty;
            e.FormattingApplied = true;
        }
    }
}

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