C# Winfrom DataGridView常用设置

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using System; using System.Collections.Generic; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms;   namespace ZB.QueueSys.Common {     public class DataGridViewHelper     {         //定义一个用于保存静态变量的实例         private static DataGridViewHelper instance = null;         //定义一个保证线程同步的标识         private static readonly object locker = new object();         //构造函数为私有，使外界不能创建该类的实例         private DataGridViewHelper() { }         public static DataGridViewHelper Instance         {             get             {                 if (instance == null)                 {                     lock (locker)                     {                         if (instance == null) instance = new DataGridViewHelper();                     }                 }                 return instance;             }         }           public void SelectAllDgv(DataGridView dgv, string cellName, bool isChecked)         {             if (dgv.Rows.Count == 0) return;               dgv.ClearSelection();             int count = dgv.Rows.Count;             for (int i = 0; i < count; i++)             {                 dgv.Rows[i].Cells[cellName].Value = isChecked;             }             dgv.RefreshEdit();         }           public void SetDgvRowColor(DataGridView dgv)         {             dgv.AlternatingRowsDefaultCellStyle.BackColor = Color.FromArgb(204, 224, 233);         }           public void SetDgvRowColor(DataGridView dgv, Color color)         {             dgv.AlternatingRowsDefaultCellStyle.BackColor = color;             dgv.AutoGenerateColumns = false;         }           public void SetDgvStyle(DataGridView dgv, Color color)         {             dgv.AlternatingRowsDefaultCellStyle.BackColor = color;             dgv.AutoGenerateColumns = false;         }           /// <summary>         /// 重绘DataGridView         /// </summary>         /// <param name="dgv"></param>         /// <param name="e"></param>         public void PaintDgv(DataGridView dgv, DataGridViewRowPostPaintEventArgs e)         {             try             {                 SolidBrush b = new SolidBrush(dgv.RowHeadersDefaultCellStyle.ForeColor);                 e.Graphics.DrawString((e.RowIndex + 1).ToString(System.Globalization.CultureInfo.CurrentUICulture),                     dgv.DefaultCellStyle.Font, b, e.RowBounds.Location.X + 5, e.RowBounds.Location.Y + 4);             }             catch { return; }         }       } }