通过VB刷新Crystal Report Viewer [英] Refresh Crystal Report Viewer via VB

问题描述

如何清除CrystalReportViewer的内容。我运行一个正确填充CrystalReportViewer的查询。如果我在不离开表单的情况下再次运行，则仍会显示之前的内容。如何清除然后显示？



我的代码示例如下。

Hi,

How do I clear the contents of CrystalReportViewer. I run a query which populates CrystalReportViewer correctly. If I run again without leaving the form, then the previous contents are still displayed. How do I clear then display?

A sample of my code is as follows.

Dim cryRpt As New ReportDocument

cryRpt.Load(Loads the crystal report form)

cryRpt.SetDataSource(MyDatasource.Tables(1))

现在在屏幕上显示结果

Display the results on screen now

CrystalReportViewer1.ReportSource = cryRpt
CrystalReportViewer1.Zoom(75)
CrystalReportViewer1.Refresh()

推荐答案

发现问题。请参阅我的评论。



我每次运行新报告时都没有清除数据源。

Found the problem. See my comment.

I was not clearing my datasource everytime I ran a new report.

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