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文档彩票走势图>>Stimulsoft Reports.WinForms教程-2019>>【Stimulsoft Reports.WinForms教程】在线程中呈现报表

【Stimulsoft Reports.WinForms教程】在线程中呈现报表


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此示例显示如何在线程中呈现报表,在线程中呈现报表是在后台进程中运行的,为此,使用BackgroundWorker类:

private System.ComponentModel.BackgroundWorker backgroundWorker1;
 
private void button1_Click(object sender, EventArgs e)
{
    backgroundWorker1.RunWorkerAsync();
}

在backgroundWorker1_DoWork流程事件开始时,您可以卸载报表并连接数据,还应该订阅已编译的报表对象的Rendering事件:

private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
    using (var stream = Assembly.GetExecutingAssembly().
           GetManifestResourceStream("RenderInThread.Master-Detail-Subdetail.mrt"))
    {
        report.Load(stream);
    }
 
    DataSet data = new DataSet();
    data.ReadXmlSchema("..\\..\\Data\\demo.xsd");
    data.ReadXml("..\\..\\Data\\demo.xml");
 
    report.RegData(data);
    report.IsRendered = false;
    report.Compile();
    report.CompiledReport.Rendering += new EventHandler(CompiledReport_Rendering);
    report.Render(false);
}

在CompiledReport_Rendering事件中更新表单上的文本——显示StatusString属性的值,完成线程工作后,在查看器中显示报表:

void CompiledReport_Rendering(object sender, EventArgs e)
{
    button1.Invoke((EventHandler)delegate { button1.Text = report.StatusString; });
}
 
private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
    report.Show();
}

示例代码的结果如下图所示:

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