C# crm：创建唯一发票

你能帮我做一下crm 2011吗 我需要从我们系统的另一个进口发票。（很简单）

我是预检电话事件

因此，在第二次调用时，方法创建另一项（如INV-01157-F4C5F5）

对我来说，这是不可接受的

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如何检查发票号码？类似于如果我在系统中有此号码，我将跳过记录。

您可以创建对

组织服务的查询，要求搜索具有给定号码的发票，如果结果不为空，则跳过创建发票

您的代码可能如下所示：

private void CreateInvoice(Invoice _invoice)
{
    IOrganizationService _service = GetCRMService();

    // Getting all invoices with given number 
    var filter = new FilterExpression();
    filter.AddCondition(e_Invoice.InvoiceNumber, ConditionOperator.Equal, _invoice.Id.ToString());

    var query = new QueryExpression("invoice")
    {
        ColumnSet = new ColumnSet(true),
        Criteria = filter,
        Distinct = true
    };

    // Executing query
    var invoices = (EntityCollection)_service.RetrieveMultiple(query);

    if (invoices.Entities.Count == 0)
    {
        // Creating new invoice
        Entity entity = new Entity("invoice");

        entity[e_Invoice.InvoiceNumber] =  _invoice.Id.ToString();
        entity[e_Invoice.CustomerId] = new EntityReference("account", new Guid("6209A6AD-43B6-E211-A99D-005056A51C55"));

        _service.Create(entity);
    }
}

您可以创建对
OrganizationService
的查询，要求搜索具有给定编号的发票，如果结果不为空，则跳过创建发票

您的代码可能如下所示：

private void CreateInvoice(Invoice _invoice)
{
    IOrganizationService _service = GetCRMService();

    // Getting all invoices with given number 
    var filter = new FilterExpression();
    filter.AddCondition(e_Invoice.InvoiceNumber, ConditionOperator.Equal, _invoice.Id.ToString());

    var query = new QueryExpression("invoice")
    {
        ColumnSet = new ColumnSet(true),
        Criteria = filter,
        Distinct = true
    };

    // Executing query
    var invoices = (EntityCollection)_service.RetrieveMultiple(query);

    if (invoices.Entities.Count == 0)
    {
        // Creating new invoice
        Entity entity = new Entity("invoice");

        entity[e_Invoice.InvoiceNumber] =  _invoice.Id.ToString();
        entity[e_Invoice.CustomerId] = new EntityReference("account", new Guid("6209A6AD-43B6-E211-A99D-005056A51C55"));

        _service.Create(entity);
    }
}