XtraReports > 示例 > 如何： 把报表导出为 MHT

下面的示例展示了如何把报表导出为 MHT 格式。 要完成此任务，需使用 XtraReport.ExportToMht 方法。 此示例也演示了当报表被导出为 MHT 时，哪些特定的 MhtExportOptions 可能被使用。

为了使此示例工作，首先需要 添加新报表 (命名为 XtraReport1) 到项目中，拖放一些报表控件到报表中，然后执行下面的代码 (例如，在窗体上任一按钮的 Button.Click 事件处理程序中)。 也要注意，如果想让结果文件自动被系统中默认的用于打开 *.mht 文件的程序打开，那么可以调用在本例中也展示了的 StartProcess 方法。

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在 DevExpress Code Central 数据库中可以找到完整的示例项目，网址是 http://www.devexpress.com/example=E156。 取决于目标平台类型 (ASP.NET、WinForms 等)，可以在线运行本示例，或者下载自动可执行的示例。

C#CopyCode image复制代码
using System.Drawing;
using System.Diagnostics;
using DevExpress.XtraPrinting;
using DevExpress.XtraReports.UI;
// ...

private void button1_Click(object sender, EventArgs e)
{
    // A path to export a report.
    string reportPath = "c:\\Test.mht";

    // Create a report instance.
    XtraReport1 report = new XtraReport1();

    // Get its MHT export options.
    MhtExportOptions mhtOptions = report.ExportOptions.Mht;

    // Set MHT-specific export options.
    mhtOptions.CharacterSet = "UTF-8";
    mhtOptions.RemoveSecondarySymbols = false;
    mhtOptions.Title = "Test Title";

    // Set the pages to be exported, and page-by-page options.
    mhtOptions.ExportMode = HtmlExportMode.SingleFilePageByPage;
    mhtOptions.PageRange = "1, 3-5";
    mhtOptions.PageBorderColor = Color.Blue;
    mhtOptions.PageBorderWidth = 3;

    // Export the report to MHT.
    report.ExportToMht(reportPath);

    // Show the result.
    StartProcess(reportPath);
}

// Use this method if you want to automaically open
// the created MHT file in the default program.
public void StartProcess(string path)
{
    Process process = new Process();
    try
    {
        process.StartInfo.FileName = path;
        process.Start();
        process.WaitForInputIdle();
    }
    catch { }
}
Visual BasicCopyCode image复制代码
Imports System.Drawing
Imports System.Diagnostics
Imports DevExpress.XtraPrinting
Imports DevExpress.XtraReports.UI
' ...

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _
Handles Button1.Click
    ' A path to export a report.
    Dim reportPath As String = "c:\\Test.mht"

    ' Create a report instance.
    Dim report As New XtraReport1()

    ' Get its MHT export options.
    Dim mhtOptions As MhtExportOptions = report.ExportOptions.Mht

    ' Set MHT-specific export options.
    mhtOptions.CharacterSet = "UTF-8"
    mhtOptions.RemoveSecondarySymbols = False
    mhtOptions.Title = "Test Title"

    ' Set the pages to be exported, and page-by-page options.
    mhtOptions.ExportMode = HtmlExportMode.SingleFilePageByPage
    mhtOptions.PageRange = "1, 3-5"
    mhtOptions.PageBorderColor = Color.Blue
    mhtOptions.PageBorderWidth = 3

    ' Export the report to MHT.
    report.ExportToMht(reportPath)

    ' Show the result.
    StartProcess(reportPath)
End Sub

' Use this method if you want to automaically open
' the created MHT file in the default program.
Public Sub StartProcess(ByVal path As String)
    Dim process As New Process()
    Try
        process.StartInfo.FileName = path
        process.Start()
        process.WaitForInputIdle()
    Catch
    End Try
End Sub

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