C# 基于新的 RDLC 文件重新加载和刷新报表查看器
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/1345373/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Reload and Refresh Report Viewer based on New RDLC File
提问by JK.
I have written a C# program using VS 2008 that uses the built in Report Viewer and processes reports locally.
我已经使用 VS 2008 编写了一个 C# 程序，该程序使用内置的报告查看器并在本地处理报告。
When the report is being viewed I want to replace the current rdlc file with a new one and refresh the report without closing the report form that contains the report viewer.
在查看报告时，我想用新的文件替换当前的 rdlc 文件并刷新报告而不关闭包含报告查看器的报告表单。
I have already checked to make sure the file is being generated properly. If I close the form with report viewer and open it back up the new file information shows. I just can't figure out how to reload the report viewer without closing the parent form.
我已经检查过以确保文件正确生成。如果我用报表查看器关闭表单并打开它备份新文件信息显示。我只是不知道如何在不关闭父窗体的情况下重新加载报表查看器。
Below is what I tried already. I get no error messages. The report appears to refresh, but it really just shows me what I was already looking at. The new RDLC file is not loaded.
下面是我已经尝试过的。我没有收到错误消息。该报告似乎刷新了，但它实际上只是向我显示了我已经在查看的内容。未加载新的 RDLC 文件。
private void BtnRefreshRpt_Click(object sender, EventArgs e)
{
try
{
GenerateNewRDLC GN = new GenerateNewRDLC();
GN.generateFile(); /*this part definitely works*/
SqlConnection conReport = new SqlConnection (ConfigurationManager.ConnectionStrings["Connection String Info"].ConnectionString);
SqlCommand cmdReport = new SqlCommand();
SqlDataReader drReport;
DataSet dsReport = new AdvEdgeDataSet();
conReport.Open();
cmdReport.CommandType = CommandType.Text;
cmdReport.Connection = conReport;
cmdReport.CommandText = strRptCriteria;
drReport = cmdReport.ExecuteReader();
dsReport.Tables[0].Load(drReport);
drReport.Close();
conReport.Close();
reportViewer1.LocalReport.ReportPath = strRptResource.ToString();
ReportDataSource rds = new ReportDataSource();
rds.Name = strRptDataSource;
rds.Value = dsReport.Tables[0];
reportViewer1.LocalReport.DataSources.Add(rds);
reportViewer1.RefreshReport();
reportViewer1.SetDisplayMode(DisplayMode.PrintLayout);
//this.reportViewer1.RefreshReport();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
采纳答案by jgallant
Try calling ReportViewer.Reset() prior to loading the new report file.
在加载新报告文件之前尝试调用 ReportViewer.Reset()。
I currently doing exactly this in my ReportViewer control, however, the source code is at work. If the Reset does not work, I will post my code here on Monday morning. It can definitely be done.
我目前在我的 ReportViewer 控件中正是这样做的，但是，源代码正在运行。如果重置不起作用，我会在周一早上在这里发布我的代码。绝对可以做到。
