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在asp.net中使用存储过程

存储过程的定义:CREATEprocedurepro_buyGoods(@GoodsNamevarchar(30),@GoodsNumint)ASdeclare@countasintset@count=(selectcount(*)fromT_GoodswhereGoodsName=@GoodsName)if@count<=0begininse

2015-06-28 00:000 次阅读
在asp.net中使用存储过程

  存储过程的定义:

  CREATE procedure pro_buyGoods

  (

  @GoodsName varchar(30),

  @GoodsNum int

  )

  AS

  declare @count as int

  set @count = (select count(*) from T_Goods where GoodsName=@GoodsName)

  if @count<=0 begin

  insert into T_Goods values (@GoodsName,@GoodsNum)

  end

  else begin

  update T_Goods set GoodsNum=GoodsNum+@GoodsNum where GoodsName=@GoodsName

  end

  GO

  说明:语法是通过检查的,这个过程是用来判断T_Goods表中有没有指定的商品,有的话则增加他的数目,没有的话新添加记录。

  这是在ASP.NET中的调用过程:

  int BuyGoodsID = Convert.ToInt32(this.txtBuyID.Text);

  string GoodsName = this.txtGoodsName.Text;

  int GoodsNum = Convert.ToInt32(this.txtGoodsNum.Text);

  int GoodsPrice = Convert.ToInt32(this.txtGoodsPrice.Text);

  SqlConnection conn = DB.CreateCon();

  conn.Open();

  string cmdText = &insert into T_BuyGoods values('&+BuyGoodsID+&','&+GoodsName+&','&+GoodsNum+&','&+GoodsPrice+&')&;

  SqlCommand cmd = new SqlCommand(cmdText,conn);

  SqlTransaction trans = conn.BeginTransaction();

  cmd.Transaction = trans;

  try

  {

  cmd.ExecuteNonQuery();

  //插入库存表的代码

  SqlCommand cmd1 = new SqlCommand(&pro_buyGoods&,conn);

  cmd1.CommandType = CommandType.StoredProcedure;

  cmd1.Parameters.Add(&@GoodsName&,SqlDbType.VarChar);

  cmd1.Parameters.Add(&@GoodsNum&,SqlDbType.Int);

  cmd1.Parameters[&@GoodsName&].Direction=ParameterDirection.Input;

  cmd1.Parameters[&@GoodsNum&].Direction=ParameterDirection.Input;

  cmd1.Parameters[&@GoodsName&].Value = GoodsName;

  cmd1.Parameters[&@GoodsNum&].Value = GoodsNum;

  cmd1.ExecuteNonQuery();

  this.Panel1.Visible = false;

  this.Panel2.Visible = true;

  this.lblInfo.Text = &提交成功!&;

  trans.Commit();

  }

  catch(Exception exp)

  {

  trans.Rollback();

  Response.Write(&