WindowsFormsApplication1.Form1'不包含'Application'的定义，也没有扩展方法 [英] WindowsFormsApplication1.Form1' does not contain a definition for 'Application' and no extension method

问题描述

我已使用示例代码为日期创建日历，但上述错误即将到来

使用系统.Runtime.InteropServices;

使用Outlook = Microsoft.Office.Interop.Outlook;

private void AddAppointment（）

        {

           试试
            {

                

                Outlook.AppointmentItem newAppointment =

                    （Outlook.AppointmentItem）

                this.Application.CreateItem（Outlook.OlItemType.olAppointmentItem）;

                newAppointment.Start = DateTime.Now.AddHours（2）;

                newAppointment.End = DateTime.Now.AddHours（3）;

                newAppointment.Location =" ConferenceRoom＃2345";

                newAppointment.Body =

                    "我们将讨论小组项目的进展情况。"; $
                newAppointment.AllDayEvent = false;

                newAppointment.Subject =" Group Project"; $
                newAppointment.Recipients.Add（" Roger Harui"）;

                Outlook.Recipients sentTo = newAppointment.Recipients;

                Outlook.Recipient sentInvite = null;

                sentInvite = sentTo.Add（"Holly Holt"）;

                sentInvite.Type =（int）Outlook.OlMeetingRecipientType

                    .olRequired;

                sentInvite = sentTo.Add（" David Junca"）;

                sentInvite.Type =（int）Outlook.OlMeetingRecipientType

                    .olOptional;

                sentTo.ResolveAll（）;

                newAppointment.Save（）;

                newAppointment.Display（true）;

            }¥b $ b            catch（例外情况）

            {

                MessageBox.Show（"发生以下错误：" + ex.Message）;

            }¥b $ b        }

以下错误即将发生 

'WindowsFormsApplication1.Form1'不包含'Application'的定义并且没有扩展方法'Application'接受类型为'WindowsFormsApplication1.Form1'的第一个参数'（您是否缺少using指令或汇编引用？）
 

请帮助

---

polachan

解决方案

你好，

看起来以下代码行触发异常：

 Outlook.AppointmentItem newAppointment = （Outlook.AppointmentItem）this.Application.CreateItem（Outlook.OlItemType.olAppointmentItem）; 

您需要将Outlook应用程序的实例传递给Windows窗体实例。例如，您可以为接受Outlook.Application类实例的表单创建一个ctor，并在代码中使用它：

类Form1 
 {
 private Outlook.Application _application; 
 
 public Form1（Outlook.Application app）
 {
 _application = app; 
} 
 
 public Outlook.Application OutlookApp 
 {
 get 
 {
 return _application; 
} 
} 
} 

所以，在代码中你可以参考OutlookApp属性。

 private void AddAppointment（）
 {
 try 
 { 
 
 Outlook.AppointmentItem newAppointment = 
（Outlook.AppointmentItem）
 this.OutlookApp.CreateItem（Outlook.OlItemType.olAppointmentItem）; 
 newAppointment.Start = DateTime.Now.AddHours（2）; 
 newAppointment.End = DateTime.Now.AddHours（3）; 
 newAppointment.Location =" ConferenceRoom＃2345" ;; 
 newAppointment.Body = 
"我们将讨论小组项目的进展情况。"; 
 newAppointment.AllDayEvent = false; 
 newAppointment.Subject =" Group Project" ;; 
 newAppointment.Recipients.Add（" Roger Harui"）; 
 Outlook.Recipients sentTo = newAppointment.Recipients; 
 Outlook.Recipient sentInvite = null; 
 sentInvite = sentTo.Add（" Holly Holt"）; 
 sentInvite.Type =（int）Outlook.OlMeetingRecipientType 
 .olRequired; 
 sentInvite = sentTo.Add（" David Junca"）; 
 sentInvite.Type =（int）Outlook.OlMeetingRecipientType 
 .olOptional; 
 sentTo.ResolveAll（）; 
 newAppointment.Save（）; 
 newAppointment.Display（true）; 
} 
 catch（Exception ex）
 {
 MessageBox.Show（"发生以下错误：" + ex.Message）; 
} 
} 

I have used the sample code to create a calendar for the date but the above mentioned error is coming

using System.Runtime.InteropServices;
using Outlook = Microsoft.Office.Interop.Outlook;

private void AddAppointment()
        {
            try
            {
                
                Outlook.AppointmentItem newAppointment =
                    (Outlook.AppointmentItem)
                this.Application.CreateItem(Outlook.OlItemType.olAppointmentItem);
                newAppointment.Start = DateTime.Now.AddHours(2);
                newAppointment.End = DateTime.Now.AddHours(3);
                newAppointment.Location = "ConferenceRoom #2345";
                newAppointment.Body =
                    "We will discuss progress on the group project.";
                newAppointment.AllDayEvent = false;
                newAppointment.Subject = "Group Project";
                newAppointment.Recipients.Add("Roger Harui");
                Outlook.Recipients sentTo = newAppointment.Recipients;
                Outlook.Recipient sentInvite = null;
                sentInvite = sentTo.Add("Holly Holt");
                sentInvite.Type = (int)Outlook.OlMeetingRecipientType
                    .olRequired;
                sentInvite = sentTo.Add("David Junca ");
                sentInvite.Type = (int)Outlook.OlMeetingRecipientType
                    .olOptional;
                sentTo.ResolveAll();
                newAppointment.Save();
                newAppointment.Display(true);
            }
            catch (Exception ex)
            {
                MessageBox.Show("The following error occurred: " + ex.Message);
            }
        }

The following error is coming 

'WindowsFormsApplication1.Form1' does not contain a definition for 'Application' and no extension method 'Application' accepting a first argument of type 'WindowsFormsApplication1.Form1' could be found (are you missing a using directive or an assembly reference?)  

Please help

---

polachan

解决方案

Hello,

Looks like the following line of code fires an exception:

Outlook.AppointmentItem newAppointment = (Outlook.AppointmentItem)this.Application.CreateItem(Outlook.OlItemType.olAppointmentItem);

You need to pass an instance of the Outlook Application to your Windows form instance. For example, you can create a ctor for the form which accepts an instance of the Outlook.Application class and use it in the code:

class Form1
{
    private Outlook.Application _application;

    public Form1(Outlook.Application app)
    {
       _application = app;
    }   

    public Outlook.Application OutlookApp
    {
       get
       {
           return _application;
       }
    } 
}

So, in the code you could refer to the OutlookApp property.

private void AddAppointment()
        {
            try
            {
                
                Outlook.AppointmentItem newAppointment =
                    (Outlook.AppointmentItem)
                this.OutlookApp.CreateItem(Outlook.OlItemType.olAppointmentItem);
                newAppointment.Start = DateTime.Now.AddHours(2);
                newAppointment.End = DateTime.Now.AddHours(3);
                newAppointment.Location = "ConferenceRoom #2345";
                newAppointment.Body =
                    "We will discuss progress on the group project.";
                newAppointment.AllDayEvent = false;
                newAppointment.Subject = "Group Project";
                newAppointment.Recipients.Add("Roger Harui");
                Outlook.Recipients sentTo = newAppointment.Recipients;
                Outlook.Recipient sentInvite = null;
                sentInvite = sentTo.Add("Holly Holt");
                sentInvite.Type = (int)Outlook.OlMeetingRecipientType
                    .olRequired;
                sentInvite = sentTo.Add("David Junca ");
                sentInvite.Type = (int)Outlook.OlMeetingRecipientType
                    .olOptional;
                sentTo.ResolveAll();
                newAppointment.Save();
                newAppointment.Display(true);
            }
            catch (Exception ex)
            {
                MessageBox.Show("The following error occurred: " + ex.Message);
            }
        }

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