根据实体自动生成sql语句并且执行

这是封装的代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.Reflection;
namespace Tool
{
public class Tool
{
/// <summary>
/// 生成查询sql，并且执行
/// </summary>
/// <param name="sql"></param>
/// <returns></returns>
public static DataSet GetList(model.Query Query)
{
Type type = Query.GetType();
string tabname = type.ToString().Split('.')[type.ToString().Split('.').Length - 1];
PropertyInfo[] propers = type.GetProperties();
StringBuilder sb = new StringBuilder();
sb.Append("select ");

foreach (PropertyInfo p in propers)
{
sb.Append(" ," + p.Name);
}
sb.Append(" from "+tabname);
string strsql = sb.Remove(8,1).ToString();
return DbHelperSQL.Query(strsql.ToString());

}

/// <summary>
/// 生成生成删除sql,并且执行
/// </summary>
/// <param name="ADD"></param>
/// <returns></returns>
public static int Delsql(model.Query model)
{
Type type = model.GetType();
string tabname = type.ToString().Split('.')[type.ToString().Split('.').Length - 1];
PropertyInfo[] propers = type.GetProperties();
StringBuilder sb = new StringBuilder();
sb.Append("delete from");
sb.Append(" "+tabname+" from ");
foreach (PropertyInfo pi in propers)
{
if (pi.PropertyType == typeof(int) || pi.PropertyType == typeof(decimal))
{
int i = (int)pi.GetValue(model, null);
if (i != 0)
{
sb.Append(" " + pi.Name + "=" + pi.GetValue(model, null));
}
}

}

return DbHelperSQL.ExecuteSql(sb.ToString());

}

/// <summary>
/// 生成添加sql语句，并且执行
/// </summary>
/// <param name="Query"></param>
/// <returns></returns>
public static int AddSQl(model.Query model)
{
Type type = model.GetType();
string tabname = type.ToString().Split('.')[type.ToString().Split('.').Length - 1];
PropertyInfo[] propers = type.GetProperties();
StringBuilder sb = new StringBuilder();
sb.Append("insert into");
sb.Append(" "+tabname+" (");
foreach (PropertyInfo p in propers)
{
sb.Append(" ," + p.Name);
}
sb.Append(") values (");
int strat=sb.Length;
foreach (PropertyInfo p in propers)
{
sb.Append(" '" + p.GetValue(model, null) + "',");
}
sb.Remove(tabname.Length+15,1);
sb.Remove(strat-1,1);
sb.Append(")");
return DbHelperSQL.ExecuteSql(sb.ToString());
}
//更新
/// <summary>
/// 更新sql，并且得执行
/// </summary>
/// <param name="model"></param>
/// <returns></returns>
public static int EditeSql(model.Query model)
{
Type type = model.GetType();
string tabname = type.ToString().Split('.')[type.ToString().Split('.').Length - 1];
PropertyInfo[] propers = type.GetProperties();
StringBuilder sb = new StringBuilder();
sb.Append("update "+tabname+" set ");
string str="";
foreach (PropertyInfo p in propers)
{
str +=", "+p.Name + "='" + p.GetValue(model, null) + "' ";

}
str = str.Substring(1, str.Length - 1);
sb.Append(str);
sb.Append(" where ");
foreach (PropertyInfo pi in propers)
{
if (pi.PropertyType == typeof(int) || pi.PropertyType == typeof(decimal))
{
int i = (int)pi.GetValue(model, null);
if (i != 0)
{
sb.Append(" " + pi.Name + "=" + pi.GetValue(model, null));
}
}

}
return DbHelperSQL.ExecuteSql(sb.ToString());

}
/// <summary>
/// 根据某个id，获得详细信息
/// </summary>
/// <param name="model"></param>
/// <returns></returns>
public static DataSet GetListByID(model.Query model)
{
Type type = model.GetType();
string tabname = type.ToString().Split('.')[type.ToString().Split('.').Length - 1];
PropertyInfo[] propers = type.GetProperties();
StringBuilder sb = new StringBuilder();
sb.Append("select ");
string str = "";
foreach (PropertyInfo p in propers)
{
str += ", " + p.Name;

}
str = str.Substring(1, str.Length - 1);
sb.Append(str);
sb.Append(" from "+tabname);
sb.Append(" where ");
foreach (PropertyInfo pi in propers)
{
if (pi.PropertyType == typeof(int) || pi.PropertyType == typeof(decimal))
{
int i = (int)pi.GetValue(model, null);
if (i != 0)
{
sb.Append(" " + pi.Name + "=" + pi.GetValue(model, null));
}
}

}

return DbHelperSQL.Query(sb.ToString());
}

}
}

这是实体

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace model
{

public class Query
{

public int id { get; set; }
public int classID { get; set; }
public string name { get; set; }
public string address { get; set; }

}
}

前台调用Tool里的方法，根据实体自动生成sql语句然并且的处理得到常用的数据集，这个做的还不完美里边还有很多的不足仅做一个参考，下次在发布完成代码

这是自己测试的一个可以正常的运行

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