重寫DataGridView，添加序號列

重寫DataGridView，添加序號列

using System;
using System.Text;
using System.Collections;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Printing;
using System.Data;
using System.Windows.Forms;
namespace PrintStock
{
    public class DataGridViewEx : DataGridView
    {
        SolidBrush solidBrush;

        public DataGridViewEx()
        {
            solidBrush = new SolidBrush(System.Drawing.Color.Red);
        }

        protected override void OnRowPostPaint(DataGridViewRowPostPaintEventArgs e)
        {
            e.Graphics.DrawString((e.RowIndex + 1).ToString(), e.InheritedRowStyle.Font, solidBrush, e.RowBounds.Location.X + 15, e.RowBounds.Y + 5);
            base.OnRowPostPaint(e);
        }
    }   
}

 

重新TextBox，實現回車代替tab鍵且只能輸入數字

using System;
using System.Collections.Generic;

using System.Text;
using System.Text.RegularExpressions;
using System.Windows.Forms;

namespace PrintStock
{
    public class NumberTextBox:TextBox
    {
        protected override void OnKeyPress(KeyPressEventArgs e)
        {
            base.OnKeyPress(e);
            if (e.KeyChar == (char)13)
            {
                SendKeys.Send("{Tab}");
            }
            if (e.KeyChar != (char)8)
            {
                Regex reg = new Regex(@"\d");
                if (!reg.IsMatch(e.KeyChar.ToString()))
                    e.Handled = true;
            }
        }       
    }
}