VB.Net报表查看器参数 [英] VB.Net Report viewer parameters

问题描述

我在report.rdlc中添加了一个名为"ReportTitle"的参数.它是文本，允许空白值和null.我尝试了不同的方法来传递参数值无济于事.到目前为止，这是我尝试过的:

I added a Parameter to report.rdlc called "ReportTitle". It is text and allows blank values and nulls. I have tried different ways to pass the parameter value to no avail. This is what I've tried so far:

  Dim parReportParam1 As New ReportParameter("ReportTitle", "THIS IS MY TITLE")
  ReportViewer1.LocalReport.SetParameters(New ReportParameter() {parReportParam1})

不起作用！

    Dim params(0) As Microsoft.Reporting.WinForms.ReportParameter
    params(0) = New Microsoft.Reporting.WinForms.ReportParameter("ReportTitle", "THIS IS MY TITLE")
    ReportViewer1.LocalReport.SetParameters(params)

没事！

    Dim params(0) As Microsoft.Reporting.WinForms.ReportParameter
    params(0) = New Microsoft.Reporting.WinForms.ReportParameter
    params(0).Name = "ReportTitle"
    params(0).Values.Add("THIS IS MY TITLE")
    ReportViewer1.LocalReport.SetParameters(params)

不！

我不知道该怎么办了.我是否必须在reportviewer或设计器上进行设置以允许参数值.任何帮助，我们将不胜感激.

I don't know what to try anymore. Do I have to set something on the reportviewer or on the designer to allow parameter values. Any help is greatly appreciated it.

推荐答案

我找到了Aswer，您需要记住在从未选择过Report的路径之后放置参数.

I found The Aswer, You need to remember to put parameters after you pick the path to the Report never before.

我完全遇到了同样的问题，一切都很好，直到我向Raport输入参数，并且花了两个小时才找到原因.

I had exacly the same problem, everything was fine till I put parameters to the Raport and I had spent two hours before I found the cause.

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