请大家帮忙看看,crystalreport的参数设置是否有问题?

[smhy2008]

CrystalReportCompare oCR = new CrystalReportCompare();
DataSet_Compare ds=new DataSet_Compare();
string strSel = "Select * from order_1";
OleDbDataAdapter MyAdapter=new OleDbDataAdapter(strSel,conn);
MyAdapter.Fill(ds,"order_1");
oCR.SetDataSource(ds);
this.CrystalReportViewer1.ReportSource = oCR;

ParameterFields paramFields = new ParameterFields();
ParameterField t = new ParameterField();
ParameterDiscreteValue t1=new ParameterDiscreteValue();
t.ParameterFieldName = "order_creator";//
t1.Value= "sm";
t.CurrentValues.Add(t1);
paramFields.Add(t);
CrystalReportViewer1.ParameterFieldInfo = paramFields;
CrystalReportViewer1.RefreshReport();

这段代码老是出现异常错误,却找不到原因,请大家帮帮看看..多谢了..

[sanfv]

帮忙关注一下。

[tyttytzhz]

我觉第一句，是不是应该
// 创建报表对象opt
ReportDocument oCR = new ReportDocument();

[wen98091]

最还直接使用reportdocumnet，