DataGridViewHelper class

DataGridView这个控件在开发中经常会被用到, C#的组件总觉得不如Delphi组件那么容易使用, 怎样在Grid上选择一个Row, 怎样选择一个Cell, 我就被block了好久. 下面是代码:

namespace LiuHarry.Utils.Components
{
   using System;
   using System.Collections;
   using System.Collections.Generic;
   using System.Data;
   using System.Windows.Forms;

   public class DataGridViewHelper
   {
       private DataGridView m_DataGridView;
       private SortedList<string, string> m_MapListFieldColumn = new SortedList<string, string>();
       private DataView m_ShowedDataViewInGrid;

       public DataGridViewHelper(DataGridView dataGridView, DataView showedDataViewInGrid)
       {
           this.m_DataGridView = dataGridView;
           this.m_ShowedDataViewInGrid = showedDataViewInGrid;
           this.InitFieldColumnMapList();
       }

       private string _GetGridViewColumnName(string dataFieldName)
       {
           for (int i = 0; i < this.m_DataGridView.Columns.Count; i++)
           {
               if (this.m_DataGridView.Columns[i].DataPropertyName == dataFieldName)
               {
                   return this.m_DataGridView.Columns[i].Name;
               }
           }
           return "";
       }

       private void InitFieldColumnMapList()
       {
           this.m_MapListFieldColumn.Clear();
           for (int i = 0; i < this.m_ShowedDataViewInGrid.Table.Columns.Count; i++)
           {
               string columnName = this.m_ShowedDataViewInGrid.Table.Columns[i].ColumnName;
               string str2 = this._GetGridViewColumnName(columnName);
               this.m_MapListFieldColumn.Add(columnName, str2);
           }
       }

       public string QuickFindGridViewColumnName(string dataFieldName)
       {
           int num = this.m_MapListFieldColumn.IndexOfKey(dataFieldName);
           if (num < 0)
           {
               throw new Exception("There no a column in DataGridView corresponding DataFieldName=" + dataFieldName);
           }
           return this.m_MapListFieldColumn.Values[num];
       }

       public void SelectAndScrollToCell(string fieldName, object fieldValue)
       {
           this.m_DataGridView.ClearSelection();
           if ((fieldName != null) && (fieldValue != null))
           {
               string str = this.QuickFindGridViewColumnName(fieldName);
               foreach (DataGridViewRow row in (IEnumerable) this.m_DataGridView.Rows)
               {
                   if (object.Equals(row.Cells[str].Value, fieldValue))
                   {
                       this.m_DataGridView.CurrentCell = row.Cells[str];
                       this.m_DataGridView.CurrentCell.Selected = true;
                       break;
                   }
               }
           }
       }

       public void SelectRow(object valueOfSortedField)
       {
           DataView showedDataViewInGrid = this.m_ShowedDataViewInGrid;
           this.m_DataGridView.ClearSelection();
           if ((showedDataViewInGrid != null) && (valueOfSortedField != null))
           {
               int num = showedDataViewInGrid.Find(valueOfSortedField);
               if (num >= 0)
               {
                   this.m_DataGridView.Rows[num].Selected = true;
               }
           }
       }

       public SortedList<string, string> MapListFieldColumn
       {
           get
           {
               return this.m_MapListFieldColumn;
           }
       }
   }
}