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如何判断ACCESS数据表中的某条记录是否存在

WBOY
WBOYOriginal
2016-06-07 15:42:452468browse

判断 方法为: OleDbConnectioncon=newOleDbConnection(连接字符串); stringname=test; con.Open(); OleDbCommandcmd=newOleDbCommand(selectcount(*)fromstudentDetailswheresname='name',con); intcount=Convert.ToInt32(cmd.ExecuteScalar()); con.Close(


判断方法为:

OleDbConnection con=new OleDbConnection("连接字符串");
string name="test";
con.Open();
OleDbCommand cmd=new OleDbCommand("select count(*) from studentDetails where sname='"+name+"'",con);

int count=Convert.ToInt32(cmd.ExecuteScalar());
con.Close();
if (count>0)
{
  //说明记录存在..
}
else
{
  //说明记录存在..
}

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