Question

我在mvc中有一个填充了xml的cshtml视图，例如：

@model myproject.net.Models.mymodel
@{
    Layout = null;
    Response.ContentType = "application/vnd.ms-excel";
    Response.AddHeader("Content-Disposition", "attachment; " + "filename=" + 
        Model.myusername.ToString()  + "(" + 
        Model.mydate.Date.ToShortDateString() + ").xls");
}

<?xml version="1.0" encoding="utf-8"?>
<ss:Workbook xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet">
    <Styles>
        <Style ss:ID="s25">
            <Alignment ss:Horizontal="Center" ss:Vertical="Bottom"/>
            <Borders>
                <Border ss:Position="Bottom" ss:LineStyle="Continuous" ss:Weight="1"/>
            </Borders>
            <Interior ss:Color="#FFA500" ss:Pattern="Solid"/>
        </Style>
    </Styles>
    <ss:Worksheet ss:Name="Sheet1">
        <ss:Table>
        @if (Model.someNumerableContent.Count > 0)
        {
            <!-- MyContent -->
            <ss:Row>
                <ss:Cell><ss:Data ss:Type="String">Content Header</ss:Data></ss:Cell>
            </ss:Row>
            <ss:Row>
                <ss:Cell><ss:Data ss:Type="String">SubHeader 1</ss:Data></ss:Cell>
                <ss:Cell><ss:Data ss:Type="String">SubHeader 2</ss:Data></ss:Cell>
                <ss:Cell><ss:Data ss:Type="String">SubHeader 3</ss:Data></ss:Cell>
                <ss:Cell><ss:Data ss:Type="String">SubHeader 4</ss:Data></ss:Cell>
                <ss:Cell><ss:Data ss:Type="String">SubHeader 5</ss:Data></ss:Cell>
            </ss:Row>
            foreach (var subContent in Model.someNumerableContent)
            {
            <ss:Row>
                <ss:Cell><ss:Data ss:Type="String">@subContent.mydate.Date.ToShortDateString()</ss:Data></ss:Cell>
                <ss:Cell><ss:Data ss:Type="String">@subContent.number</ss:Data></ss:Cell>
                <ss:Cell><ss:Data ss:Type="String">@subContent.name</ss:Data></ss:Cell>
                <ss:Cell><ss:Data ss:Type="String">@subContent.surname</ss:Data></ss:Cell>
                <ss:Cell><ss:Data ss:Type="String">@subContent.issue</ss:Data></ss:Cell>
            </ss:Row>
            }
            <ss:Row> </ss:Row>
        }
        </ss:Table>
    </ss:Worksheet>
</ss:Workbook>

我希望将其转换为.xls文件并附加到邮件而不保存在任何地方。但无法弄清楚我怎么能做到这一点。我无法使用office.interop来获取服务器中的一些限制因此它不是我的选择。我只想通过Xml创建一个.xls文件并使用.net邮件发送它。到目前为止我已经这样做了：

// Memory stream for the xml file
using (MemoryStream memoryStream = new MemoryStream())
{
    //                                                 Can i use something like this?
    byte[] contentAsBytes = Encoding.Default.GetBytes( View("ExportToExcel").ToString() );
    memoryStream.Write(contentAsBytes, 0, contentAsBytes.Length);
    // Set the position to the beginning of the stream.
    memoryStream.Seek(0, SeekOrigin.Begin);
    // Create attachment
    ContentType contentType = new ContentType();
    contentType.MediaType = MediaTypeNames.Text.Xml;
    contentType.Name = UserName + "(" + FileDate + ").xls";
    // Attach
    mail.Attachment = new Attachment(memoryStream, contentType);
}

所以我怎么能做到这一点呢？

Answer 1

我无法成功实施剃刀视图，但在工作30个小时之后。我发现了另一种方法..

首先我创建了一个XmlString，如下所示：

public String XmlToImplement(int id)
{
    // Add values from db to model
    MyModel model = new MyModel();
    model.contents = db.contents.Where(c => c.MyData.id == id).ToList();
    // XmlString
    String XmlString = @"<?xml version='1.0' encoding='utf-8'?>
    <ss:Workbook xmlns='urn:schemas-microsoft-com:office:spreadsheet'
                xmlns:o='urn:schemas-microsoft-com:office:office'
                xmlns:x='urn:schemas-microsoft-com:office:excel'
                xmlns:ss='urn:schemas-microsoft-com:office:spreadsheet'
                xmlns:html='http://www.w3.org/TR/REC-html40'>
        <Styles>
            <Style ss:ID='s25'>
                <Alignment ss:Horizontal='Center' ss:Vertical='Bottom'/>
                <Borders>
                    <Border ss:Position='Bottom' ss:LineStyle='Continuous' ss:Weight='1'/>
                </Borders>
                <Interior ss:Color='#FFA500' ss:Pattern='Solid'/>
            </Style>
        </Styles>
        <ss:Worksheet ss:Name='Sheet1'>
            <ss:Table>";
            if (model.contents.Count > 0)
            {
                XmlString = XmlString + @"<!-- MyModelData -->
                <ss:Row>
                    <ss:Cell><ss:Data ss:Type='String'> MyModelData </ss:Data></ss:Cell>
                </ss:Row>
                <ss:Row>
                    <ss:Cell><ss:Data ss:Type='String'>Date</ss:Data></ss:Cell>
                    <ss:Cell><ss:Data ss:Type='String'>Number</ss:Data></ss:Cell>
                    <ss:Cell><ss:Data ss:Type='String'>Name/Surname</ss:Data></ss:Cell>
                </ss:Row>"; 
                foreach (var content in model.contents)
                {
                    XmlString = XmlString + @"<ss:Row>";
                    XmlString = XmlString + @"<ss:Cell><ss:Data ss:Type='String'>" + content.thedate.Date.ToShortDateString() + "</ss:Data></ss:Cell>";
                    XmlString = XmlString + @"<ss:Cell><ss:Data ss:Type='String'>" + content.number + "</ss:Data></ss:Cell>";
                    XmlString = XmlString + @"<ss:Cell><ss:Data ss:Type='String'>" + content.namesurname+ "</ss:Data></ss:Cell>";
                    XmlString = XmlString + @"</ss:Row>";
                }
                // An empty row for next value set
                XmlString = XmlString + "<ss:Row> </ss:Row>"; 
            }
            XmlString = XmlString + @"</ss:Table>
        </ss:Worksheet>
    </ss:Workbook>";
    return XmlString;
}

然后我使用MemoryStream编码将其保存到UTF8

// Create attachment
// Add XML to MemoryStream                                          /* MyXmlString */
MemoryStream memoryStream = new MemoryStream(Encoding.UTF8.GetBytes(XmlToImplement(id)));

然后将ContentType定义为Excel

// Content Type
ContentType contentType = new ContentType("application/vnd.ms-excel");
contentType.Name = UserName + "(" + FileDate + ").xls";

最后我将它附加到.net邮件

// Attach
mail.Attachment = new Attachment(memoryStream, contentType);
mail.Attachment.NameEncoding = UTF8Encoding.UTF8;
mail.Attachment.TransferEncoding = TransferEncoding.Base64;
mail.Attachment.ContentDisposition.DispositionType = DispositionTypeNames.Attachment;

它运作得很好。我可能无法将xml视图转换为邮件附件，但很容易我可以将xml字符串转换为邮件附件，我希望这有助于其他人解决这个问题。

Answer 2

取决于excel的版本或您需要的功能。 Carlos Ag's Excel Writer可能就足够了。它有点陈旧，但适用于简单的excel工作簿。

如果您需要自己滚动模板，请查看Razor Generator Templates以将模型渲染为字符串。将字符串传递给Stream并附加到电子邮件。

<强>更新

首先使用剃须刀模板，你需要一个视图

@* Generator: Template *@
@inherits The.NameSpace.RazorTemplateBase<dynamic>

@functions  {
    public object Model { get; set; }
}

<your typical markup goes here...>

然后你需要基类

public abstract class RazorTemplateBase<dynamic>
{
    public static string RootAddress { get; set; }

    public virtual RazorTemplateBase<dynamic> Layout { get; set; }

    private readonly StringBuilder generatingEnvironment = new StringBuilder();

    public abstract void Execute();

    public void WriteLiteral(string textToAppend)
    {
        if (string.IsNullOrEmpty(textToAppend))
        {
            return;
        }
        generatingEnvironment.Append(textToAppend);
    }

    public void Write(object value)
    {
        if ((value == null))
        {
            return;
        }
        string stringValue;
        var t = value.GetType();
        var method = t.GetMethod("ToString", new [] { typeof(IFormatProvider) });
        if ((method == null))
        {
            stringValue = value.ToString();
        }
        else
        {
            stringValue = ((string)(method.Invoke(value, new object[] { CultureInfo.InvariantCulture })));
        }
        WriteLiteral(stringValue);
    }

    string content;

    public string RenderBody()
    {
        return content;
    }

    public string TransformText()
    {
        Execute();
        if (Layout != null)
        {
            Layout.content = generatingEnvironment.ToString();
            return Layout.TransformText();
        }
        else
        {
            return generatingEnvironment.ToString();
        }
    }
}

按照项目homepage上的说明设置custom tool（查看属性窗口）RazorGenerator。

那么你可以做点什么

string excelXml = new NameOfMyView { Model = theData }.TransformText();
//write string to memmory stream, attach to MailMessage

如何使用MemoryStream将Xml附加到.net邮件附件？

2 个答案: