【原创】CRM 2015/2016，SSRS 生成PDF文件，幷以附件的形式发送邮件

主要步骤如下：

1. 生成一条邮件记录
2. 生成一条ActivityParty记录
3. 生成PDF文件，并以Base64添加到ActivityMimeAttachment 中去
4. 打开发送邮件窗口，以便编辑及发送邮件

第一，生成邮件记录

CreateEmail: function () {
　　var email = new Object();
　　email.Subject = "Quotation";
　　SDK.REST.createRecord(email, "Email", EmailCallBack, function (error) { alert(error.message); });
},

第二，当成功建好邮件记录后，我们来生成ActivityParty记录

// Email Call Back function
EmailCallBack: function (result) {
　　email1 = result;
　　var activityParty = new Object();
　　// Set the "party" of the ActivityParty // EntityReference of an entity this activityparty relatated to.
　　activityParty.PartyId = {
　　　　Id: Xrm.Page.context.getUserId(), // id of the the current user which becomes the sender
　　　　LogicalName: "systemuser"
　　};
　　// Set the "activity" of the ActivityParty
　　// EntityReference.
　　activityParty.ActivityId = {
　　　　Id: result.ActivityId,
　　　　LogicalName: "email"
　　};
　　// Set the participation type (what role the party has on the activity).
　　activityParty.ParticipationTypeMask = { Value: 1 }; // 1 mean Sender

　　SDK.REST.createRecord(activityParty, "ActivityParty", ActivityPartyCallBack, function (error) { alert(error.message); });
},

第三，当成功建好ActivityParty记录后，调用SSRS生成PDF形式的报表，并以附件形式附加到邮件中去

ActivityPartyCallBack: function (result2) {
　　// Generate the pdf file to attached to the Email.
　　var responseSession = getReportingSession();
　　encodePdf(responseSession);
},

// create a Email record with the attachement and other parameters.
CreateEmailAttachment: function (bdy) {
　　//Email attachment parameters
　　var activitymimeattachment = Object();
　　activitymimeattachment.ObjectId = Object();
　　activitymimeattachment.ObjectId.LogicalName = "email";
　　activitymimeattachment.ObjectId.Id = email1.ActivityId;
　　activitymimeattachment.ObjectTypeCode = "email",
　　activitymimeattachment.Subject = "File Attachment";
　　activitymimeattachment.Body = bdy;
　　activitymimeattachment.FileName = "Quotation.pdf";
　　//Attachment call
　　activitymimeattachment.MimeType = "application/pdf";

　　SDK.REST.createRecord(activitymimeattachment, "ActivityMimeAttachment",ActivityMimeAttachmentCallBack, function (error) { alert(error.message); });
},

第四，打开邮件编辑窗口，以便编辑及发送邮件。

ActivityMimeAttachmentCallBack: function (result) {
　　var options = {
　　　　openInNewWindow: true
　　};
　　Xrm.Utility.openEntityForm("email", email1.ActivityId, null, options);
},

以下是SSRS生成PDF的代码。

//Encode the binary output pdf file to create an attachement
encodePdf: function (responseSession) {

　　var retrieveEntityReq = new XMLHttpRequest();

　　var pth = Xrm.Page.context.getClientUrl() + "/Reserved.ReportViewerWebControl.axd?ReportSession=" + responseSession[0] + "&Culture=1033&CultureOverrides=True&UICulture=1033&UICultureOverrides=True&ReportStack=1&ControlID=" + responseSession[1] + "&OpType=Export&FileName=Public&ContentDisposition=OnlyHtmlInline&Format=PDF";

　　retrieveEntityReq.open("GET", pth, true);
　　retrieveEntityReq.setRequestHeader("Accept", "*/*");
　　retrieveEntityReq.responseType = "arraybuffer";

　　retrieveEntityReq.onreadystatechange = function () {
　　　　if (retrieveEntityReq.readyState == 4 && retrieveEntityReq.status == 200) {
　　　　　　var binary = "";
　　　　　　var bytes = new Uint8Array(this.response);

　　　　　　for (var i = 0; i < bytes.byteLength; i++) {
　　　　　　　　binary += String.fromCharCode(bytes[i]);
　　　　　　}
　　　　　　var bdy = btoa(binary);

　　　　　　CreateEmailAttachment(bdy);
　　　　}
　　};
　　retrieveEntityReq.send();
},

getReportingSession: function () {
　　var selectedIds = Xrm.Page.data.entity.getId();
　　var reportName = "quotation.rdl";
　　var reportGuid = // Report GUID - Replace with your report GUID

　　var pth = Xrm.Page.context.getClientUrl() + "/CRMReports/rsviewer/QuirksReportViewer.aspx";

　　var retrieveEntityReq = new XMLHttpRequest();

　　retrieveEntityReq.open("POST", pth, false);

　　retrieveEntityReq.setRequestHeader("Accept", "*/*");

　　retrieveEntityReq.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");

　　retrieveEntityReq.send("id=%7B" + reportGuid + "%7D&uniquename=" + Xrm.Page.context.getOrgUniqueName() + "&iscustomreport=true&reportnameonsrs=&reportName=" + reportName + "&isScheduledReport=false&p:<parameters Name In ssrs>=" + selectedIds.toLowerCase().replace(/[^a-z0-9-]/g, ''));
　　// p:<parameters Name In ssrs> :Is optional when you want to have parameter.
　　var x = retrieveEntityReq.responseText.lastIndexOf("ReportSession=");
　　var y = retrieveEntityReq.responseText.lastIndexOf("ControlID=");

　　var ret = new Array();

　　ret[0] = retrieveEntityReq.responseText.substr(x + 14, 24);
　　ret[1] = retrieveEntityReq.responseText.substr(x + 10, 32);

　　return ret;
},