如何将reportparameter添加到localreport，然后在rdlc报告（文本框）中引用它

本文介绍了如何将reportparameter添加到localreport，然后在rdlc报告（文本框）中引用它的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 using (LocalReport reportEngine = reportViewer1.LocalReport) { this.Instrument_ReadingsTableAdapter.Fill(this.LiveDataSetFromActualDB.Instrument_Readings); reportEngine.ReportPath = Application.StartupPath + "\\Report1.rdlc"; //reportEngine.ReportPath = Application.StartupPath + "\\Report2.rdlc"; // -- NEW CODE ADDED HERE //ReportDataSource rds = new ReportDataSource(); //rds.Name = "Datasettest"; //rds var dt_min = this.Instrument_ReadingsTableAdapter.Min(); var dt_max = this.Instrument_ReadingsTableAdapter.Max(); if (!dt_min.HasValue || !dt_max.HasValue) { return; } var diff = (dt_max.Value - dt_min.Value).TotalMinutes; this.reportViewer1.LocalReport.ReportEmbeddedResource = "Report1.rdlc"; ReportParameter rp = new ReportParameter("Time_Span", diff.ToString()); reportEngine.SetParameters(new ReportParameter[] { rp }); this.reportViewer1.RefreshReport(); 我尝试了什么： 我收到错误 Microsoft.reporting.WinForms.LocalReport.InternalGetReportParameters（ CatalogItemContextBase reportContext，NameValueCollection userSpecifiedValues，ParameterInfoCollection baseLineParameters，DatasourceCredentialsCollection credentials，ReportRuntimeSetup reportRuntimeSetup at Microsoft.Reporting.Winforms.LocalReport.SetParameters（IEnumerable1 parameters） at Live_AM_Report.Form1.Form1_Load （对象发送者，EventArgs e） ...第255行，其中= reportEngine.SetParameters（new ReportParameter [] {rp}）; 在rdlc的设计方面 我在报告数据中添加了一个名为Timespan的参数 我还添加了引用参数的文本框，现在是设置该pa值的简单情况rameter，文本框应该调用它。 文本框的值字段= [@Time_Span]（我添加的参数） 我有现在已经挣扎了好几天，而且非常令人沮丧，任何帮助都会非常感激。What I have tried:I recieve an error "Microsoft.reporting.WinForms.LocalReport.InternalGetReportParameters(CatalogItemContextBase reportContext, NameValueCollection userSpecifiedValues, ParameterInfoCollection baseLineParameters, DatasourceCredentialsCollection credentials, ReportRuntimeSetup reportRuntimeSetup at Microsoft.Reporting.Winforms.LocalReport.SetParameters(IEnumerable1 parameters)atLive_AM_Report.Form1.Form1_Load(Object sender, EventArgs e) ... line 255 , which = reportEngine.SetParameters(new ReportParameter[] { rp });On the design side of the rdlcI have added a parameter called Timespan in the "Report data"I also added the textbox that refers to the parameter, now its a simple case of setting the value in that parameter, and the textbox should call it.The Textbox's Value field = [@Time_Span] (The parameter i added)I have struggled with this for a few days now, and its really frustrating, any help would be greatly appreciated.推荐答案 将参数添加到RDLC报告中。 1.在Visual Studio中打开报告。 2.按CRL + ALT + D 3.报告数据选项卡打开。 4.选择参数并右键单击以添加参数。 在Set参数中 To Add Parameter to RDLC report.1. Open report in Visual Studio.2. Press CRL + ALT + D3. "Report Data" tab gets open.4. Select "Parameter" and right click to add parameter.In Set parameter ReportParameter[] rptParams = new ReportParameter[] { new ReportParameter("param1",txtParam1.Text), new ReportParameter("param2",txtParam2.Text)};rptInvoiceTC.LocalReport.SetParameters(rptParams); 这篇关于如何将reportparameter添加到localreport，然后在rdlc报告（文本框）中引用它的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！