asta的问题?

[roclee2000]

用Asta控件中客户端在formcreate中写入下面的代码，连astabdeserver


AstaClientDataSet1.Open ;
caption:=inttostr(AstaClientDataSet1.RecordCount);
AstaClientDataSet1.First;
caption:=caption+' '+AstaClientDataSet1.FieldByName('custno').asstring;



到 AstaClientDataSet1.First就出错了,说是AstaClientDataSet1没打开，为什么？
我应该怎么处理？

[lizongqi]

如果AstaClientDataSet1.data是空的话，就会出错。确保AstaClientDataSet1.data有值，判断一下recordcount

你把AstaClientDataSet1.First;注释掉，运行到caption:=inttostr(AstaClientDataSet1.RecordCount);就会出错。