Dynamics 365——业务流程开发

业务流程字段控制

业务流程上可以添加绑定实体的字段，既有字段，那么就有字段的控制。设置业务流程字段的必填，可以在业务流程上勾选required即可。那么如何锁定业务流程上的字段呢，其实很简单，只需在字段名称前加上header_process_即可。那我们就可以使用getControl下所有的方法啦！

Xrm.Page.getControl("header_process_tec_currencyid").setDisabled(true)

业务流程阶段更改后触发事件

//窗体OnLoad中添加以下代码
//addOnStageChange() 为回调函数阶段更改后触发
Xrm.Page.data.process.addOnStageChange(onStageChange);
//声明onStageChange
//阶段改变事件
function onStageChange() {
    //获取下一阶段名称
    var stageName = Xrm.Page.data.process.getActiveStage().getName();
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}

业务流程阶段更改前触发事件

更改前触发的事件只需在窗体OnLoad中添加方法，将上下文作为参数传入即可。

function AddOnPreStageChange(ExecutionContext) {
    //update
    if (Xrm.Page.ui.getFormType() == FORM_TYPE_UPDATE) {
        var objFormContext = ExecutionContext.getFormContext();
        objFormContext.data.process.addOnPreStageChange(function (ExecutionContext) {
            var BPFArgs = ExecutionContext.getEventArgs();
			//阶段向后推进
            if (BPFArgs.getDirection() === "Next") {
                var objFormContext = ExecutionContext.getFormContext();
                //获取窗体上字段的值
                var stage = objFormContext.getAttribute('tec_projectstage').getValue();
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				业务逻辑
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			}
			//阶段向前推进
            else if (BPFArgs.getDirection() === "Previous") {
				//阻止推进
                BPFArgs.preventDefault();
                Xrm.Navigation.openAlertDialog('Attention: workflow can not move back to previous stage！');
            }
        });
    }
}

业务流程后台自动推进

//获取对应业务流程
//获取当前项目对应业务流程
string DealProcStr = "<fetch version='1.0' output-format='xml-platform' mapping='logical' distinct='false'>";
DealProcStr += "<entity name='" + businessProcessName + "'>";
DealProcStr += "<attribute name='processid' />";
DealProcStr += "<attribute name='businessprocessflowinstanceid' />";
DealProcStr += "<attribute name='bpf_" + getData.LogicalName + "id' />";
DealProcStr += "<filter type='and'>";
DealProcStr += "<condition attribute='bpf_" + getData.LogicalName + "id' operator='eq' value='" + getData.Id + "' />";
DealProcStr += "</filter>";
DealProcStr += "</entity>";
DealProcStr += "</fetch>";
DataCollection<Entity> Process = svr.GetEntityDataByFetchXml(DealProcStr);
if (Process.Count > 0)
{
    //查找流程下一阶段id
    //stagename 为你想要推进到哪一阶段的名称
    string StageFetch = "<fetch version='1.0' output-format='xml-platform' mapping='logical' distinct='false'>";
    StageFetch += "<entity name='processstage'>";
    StageFetch += "<attribute name='processstageid' />";
    StageFetch += "<attribute name='processid' />";
    StageFetch += "<attribute name='stagename' />";
    StageFetch += "<filter type='and'>";
    StageFetch += "<condition attribute='processid' operator='eq' value='" + ((EntityReference)entities[0]["processid"]).Id + "' />";
    StageFetch += "<condition attribute='stagename' operator='eq' value='白银' />";
    StageFetch += "</filter>";
    StageFetch += "</entity>";
    StageFetch += "</fetch>";
    FetchExpression NextStegefetch = new FetchExpression(StageFetch);
    DataCollection<Entity> NextStegeid = service.RetrieveMultiple(NextStegefetch).Entities;
    if (NextStegeid.Count > 0)
    {
        if (NextStegeid[0].Contains("processstageid"))
        {
            Entity getProcess = new Entity("new_accountprocesses");
            getProcess.Id = entities[0].Id;
            getProcess["activestageid"] = new EntityReference("processstage", NextStegeid[0].Id);
            //更新流程阶段
            service.Update(getProcess);
        }
    }
}

更换业务流程

业务流程创建则添加了一个以业务流程为名称的实体，通过对实体记录的操作就可以更改业务流程了！

/// <summary>
/// 选择业务流程
/// </summary>
/// <param name="entityName">实体唯一名称</param>
/// <param name="entityId">实体ID</param>
/// <param name="businessProcessEntityName">更改后业务流程的唯一名称</param>
/// <param name="preBusProcessEntityNamee">将要替换的业务流程名称（允许为空）</param>
public void SwitchProcesses(string entityName, Guid entityId, string businessProcessEntityName, string preBusProcessEntityNamee = null)
{
	//根据业务流程的唯一名称查找业务流程
	string DealProcStr = "<fetch version='1.0' output-format='xml-platform' mapping='logical' distinct='false'>";
	DealProcStr += "<entity name='workflow'>";
	DealProcStr += "<attribute name='uniquename' />";
	DealProcStr += "<filter type='and'>";
	DealProcStr += "<condition attribute='uniquename' operator='eq' value='"+ businessProcessEntityName + "' />";
	DealProcStr += "</filter>";
	DealProcStr += "</entity>";
	DealProcStr += "</fetch>";
	FetchExpression fetchxml = new FetchExpression(DealProcStr);
	DataCollection<Entity> workflow = _service.RetrieveMultiple(fetchxml).Entities;

    if (workflow!=null && workflow.Count>0)
    {
        //删除旧业务流程  
        if (preBusProcessEntityNamee!=null)
        {
			string fetchXml = "<fetch version='1.0' output-format='xml-platform' mapping='logical' distinct='false'>" +
								  "<entity name='"+ preBusProcessEntityNamee + "'>" +
									"<attribute name='businessprocessflowinstanceid' />" +
									"<attribute name='bpf_name' />" +
									"<attribute name='createdon' />" +
									"<attribute name='bpf_"+ entityName + "id' />" +
									"<order attribute='bpf_name' descending='false' />" +
									"<filter type='and'>" +
									  "<condition attribute='bpf_"+ entityName + "id' operator='eq' value='{"+ entityId.ToString() + "}' />" +
									"</filter>" +
								  "</entity>" +
								"</fetch>";
			FetchExpression preBusProcessEntityNameeXml = new FetchExpression(fetchXml);
			DataCollection<Entity> preBusProcessEntityNameeEntities = _service.RetrieveMultiple(preBusProcessEntityNameeXml).Entities;
            if (preBusProcessEntityNameeEntities!=null && preBusProcessEntityNameeEntities.Count>0)
            {
				_service.Delete(preBusProcessEntityNameeEntities[0].LogicalName, preBusProcessEntityNameeEntities[0].Id);
            }
		}
		//绑定新的业务流程
		SetProcessRequest SetProcess = new SetProcessRequest() {
			Target = new EntityReference(entityName, entityId),
			NewProcess= new EntityReference(workflow[0].LogicalName, workflow[0].Id)
		};
		_service.Execute(SetProcess);
	}
}