.net下调用sqlserver存储过程的小例子

首先,在sqlserver中创建存储过程,在调用时分为有参数和没有参数两种情况,先就简单的没有参数的情况简要的介绍:
  假设存储过程如下:
复制代码 代码如下:

    create proc selectall
  as
  select * from studentinf
  则此sp的调用如下:
  sqlcommand selectcmd = new sqlcommand(“selectall”, conn);
  //conn 为sqlconnection
  selectcmd.commandtype = commandtype.storedprocedure;
  如果需要将结果集加到某个dataadapter上,则可如下:
  sqldataadapter studa = new sqldataadapter();
  studa.selectcommand = selectcmd;
  如果有参数:create proc andselect
  @studentid varchar(10),
  @studentname varchar(10),
  as
  select * from studentinf where studentid = @studentid and studentname = @studentname
  则参数可以如下添加:
  selectcmd.parameters.add(“@studentid”, sqldbtype.nvarchar, 10);
  selectcmd.parameters.add(“@studentname”, sqldbtype.nvarchar, 10);
  如果只有一个参数,也可以这样赋值:
  sqlparameters onepara = selectcmd.parameters.add(“@studentid”, sqldbtype.nvarchar, 10);
  onepara.value = “ a string ”