我正在尝试加载一个水晶报告,该报告应该根据用户选择的日期加载报告。我已经编写了下面的代码来帮助我实现这个,但是当我使用datetimepicker(dtpDate)选择日期时,单击加载按钮(btnReport),编译器会抛出一个无法加载报告的异常。你可以帮我找一下错误的地方吗?我该如何纠正呢?
namespace linqToSql_trial
{
public partial class frmFlightDetailsReport : Form
{
public frmFlightDetailsReport()
{
InitializeComponent();
}
private void btnReport_Click(object sender, EventArgs e)
{
ReportDocument cryRpt = new ReportDocument();
cryRpt.Load("C:\\Users\\Daniel\\Desktop\\linqToSql_trial\\linqToSql_trial\flightDetailsReport.rpt");
ParameterFieldDefinitions crParameterFieldDefinitions ;
ParameterFieldDefinition crParameterFieldDefinition ;
ParameterValues crParameterValues = new ParameterValues();
ParameterDiscreteValue crParameterDiscreteValue = new ParameterDiscreteValue();
crParameterDiscreteValue.Value = dtpDate.Value;
crParameterFieldDefinitions = cryRpt.DataDefinition.ParameterFields;
crParameterFieldDefinition = crParameterFieldDefinitions["flightdate"];
crParameterValues = crParameterFieldDefinition.CurrentValues;
crParameterValues.Clear();
crParameterValues.Add(crParameterDiscreteValue);
crParameterFieldDefinition.ApplyCurrentValues(crParameterValues);
crystalReportViewer1.ReportSource = cryRpt;
crystalReportViewer1.Refresh();
}
private void frmFlightDetailsReport_Load(object sender, EventArgs e)
{
}
}
}
答案 0 :(得分:0)
我已将cryRpt.Load行调整为此
cryRpt.Load(@ “C:\用户\丹尼尔\桌面\ linqToSql_trial \ linqToSql_trial \ flightDetailsReport.rpt”);
它已设法加载。