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1.SQLOperate.cs
/// <summary>
///SQLOperate µÄժҪ˵Ã÷
/// </summary>
public class SQLOperate
{

/// <summary>
/// ¸ù¾ÝparentId²éµØÇøÐÅÏ¢
/// </summary>
/// <param name="parentId"></param>
/// <returns></returns>
public static DataTable GetAreaInfoByParentId(int parentId)
{
string sql = "select * from Area where ParentId = @ParentId";
SqlParameter[] para = new SqlParameter[]
{
new SqlParameter("@ParentId",parentId)
};
return DBHelper.GetDataSet(sql, para);
}
/// <summary>
/// ¸ù¾ÝID²éÕÒµØÇø
/// </summary>
/// <param name="areaId"></param>
/// <returns></returns>
public static DataTable GetAreaInfoById(int areaId)
{
string sql = "select * from Area where AreaId = @AreaId";
SqlParameter[] para = new SqlParameter[] { new SqlParameter("@Areaid",areaId)};
return DBHelper.GetDataSet(sql, para);

}
/// <summary>
/// Ôö¼Óͬһ¼¶µØÇø
/// </summary>
/// <param name="parentId"></param>
/// <param name="areaName"></param>
/// <returns></returns>
public static int AddParityClass( int parentId,string areaName)
{
string sql = "insert into Area(AreaName,ParentId)values(@AreaName,@ParentId)";
SqlParameter[] para = new SqlParameter[]
{
new SqlParameter("@AreaName",areaName),
new SqlParameter("@ParentId",parentId)
};


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//====================================================================
using System;
using System.Collections.Generic;
using System.Text;
using System.Data.SqlTypes;
using System.Data.SqlClient;
using Microsoft.Sq ......
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