自动格式化为钱

Question

我尝试制作一个自动格式系统，例如：将数字编号为5124.25

用户输入5：0,05

用户输入1：0,51

用户输入2：5,12

用户输入4：51,24

用户输入2：512,42

用户输入5：5124,25

我需要将这个“格式样式”放在datagridview的一列中，为此，我试试这个：

    private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
    {
        var temp = (DataGridView)sender;
        if (temp.CurrentCell.ColumnIndex == 4)
        {
            e.Control.PreviewKeyDown -= Control_PreviewKeyDown;
            e.Control.PreviewKeyDown += new PreviewKeyDownEventHandler(Control_PreviewKeyDown);
        }
    }

    void Control_PreviewKeyDown(object sender, PreviewKeyDownEventArgs e)
    {
        var temp = (DataGridViewTextBoxEditingControl)sender;
        TextBoxMoeda(ref temp, e);

        /*if (e.KeyCode == Keys.Escape)
        {
            System.Diagnostics.Debug.Print("escape pressed");
        }*/
    }

    public static void TextBoxMoeda(ref DataGridViewTextBoxEditingControl txt, PreviewKeyDownEventArgs e)
    {
        string n = string.Empty;
        double v = 0;
        try
        {
            n = txt.Text.Replace(",", "").Replace(".", "").Replace("R$", "");
            if (n.Length == 0)
                txt.Text = "0,00";
            else if (n.Length == 1)
                txt.Text = "0,0" + n;
            else if (n.Length == 2)
                txt.Text = "0," + n;
            else if(n.Length > 2)
                txt.Text = n.Substring(0, n.Length - 2) + "," +
                n.Substring(n.Length - 2);
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message, "TextBoxMoeda");
        }
    }

如何制作这种dinamic格式的钱？

Answer 1

尝试将DefaultCellStyle.Format设置为“c”以获取金钱或任何您想要的格式，然后订阅CellFormatting事件：

dataGridView1.Columns["Column2"].DefaultCellStyle.Format = "c";
dataGridView1.CellFormatting += dataGridView1_CellFormatting;

尝试将信息解析为十进制格式：

void dataGridView1_CellFormatting(object sender,
                                  DataGridViewCellFormattingEventArgs e) {
  if (e.CellStyle.Format == "c" &&
      e.RowIndex != this.dataGridView1.NewRowIndex) {
    decimal d;
    if (e.Value != null && decimal.TryParse(e.Value.ToString(), out d)) {
      e.Value = d.ToString("c");
    }
  }
}