单线程单元问题 [英] Single thread apartment issue

问题描述

从我的MainForm我调用下面打开一个新的形式

  MyForm的某物=新建MyForm（）; 
 sth.show（）; 
  

一切的伟大工程，但是这种形式有一个组合框，当我将它的AutoCompleteMode建议和追加，我得到这个例外，同时显示的形式：

的当前线程必须设置为单线程单元（STA）模式下可以进行OLE调用之前。确保您的主要功能有请将STAThreadAttribute上标注的

我已经设置我的主要功能这个属性由异常的要求：

  [STAThread] 
静态无效的主要（字串[] args）
 {... 
  

我能请得到一些帮助，了解什么可能是错误的。

示例代码：

 私人无效mainFormButtonCLick（对象发件人，EventArgs五）
 {
 //系统.Threading.Thread.CurrentThread.SetApartmentState（ApartmentState.STA）; ？ 
 MyForm的形式=新建MyForm（）; 
 form.show（）; 
} 
  

设计师：

  this.myCombo.AutoCompleteMode = System.Windows.Forms.AutoCompleteMode.Suggest; 
 this.myCombo.AutoCompleteSource = System.Windows.Forms.AutoCompleteSource.ListItems; 
 this.myCombo.FormattingEnabled = TRUE; 
 this.myCombo.Location =新System.Drawing.Point（20，12）; 
 this.myCombo.Margin =新System.Windows.Forms.Padding（4,5，4,5）; 
 this.myCombo.Name =myCombo; 
 this.myCombo.Size =新System.Drawing.Size（430，28）; 
 this.myCombo.Sorted = TRUE; 
 this.myCombo.TabIndex = 0;那句; 
  

设置数据源

 公共MyForm的（名单<串> ELEM）
 {
的InitializeComponent（）; 
 populateColorsComboBox（）; 
 PopulateComboBox（ELEM）; 
} 
 
公共无效PopulateComboBox（列表<串GT;清单）
 {
 this.myCombo.DataSource = NULL; 
 this.myCombo.DisplayMember =TEXT ; 
 this.myCombo.DataSource =清单; 
} 
  

解决方案

是主要（字串[] args）真的是你的切入点？

也许你有不带参数的另一个main（）的过载，或者一些其他的Main（）中的另一个类，请打开项目属性，并寻找起始对象。

From my mainform I call the following to open a new form

MyForm sth = new MyForm();
sth.show();

Everything works great however this form has a combobox that, when I switch its AutoCompleteMode to suggest and append, I got this exception while showing the form:

Current thread must be set to single thread apartment (STA) mode before OLE calls can be made. Ensure that your Main function has STAThreadAttribute marked on it.

I have set this attribute on my main function as requested by the exception:

[STAThread]
static void Main(string[] args)
{ ...

Can I please get some help as to understand what might be wrong.

Sample code:

private void mainFormButtonCLick (object sender, EventArgs e)
{
    // System.Threading.Thread.CurrentThread.SetApartmentState(ApartmentState.STA); ?
    MyForm form = new MyForm();
    form.show();
}

Designer:

this.myCombo.AutoCompleteMode = System.Windows.Forms.AutoCompleteMode.Suggest;
this.myCombo.AutoCompleteSource = System.Windows.Forms.AutoCompleteSource.ListItems;
this.myCombo.FormattingEnabled = true;
this.myCombo.Location = new System.Drawing.Point(20, 12);
this.myCombo.Margin = new System.Windows.Forms.Padding(4, 5, 4, 5);
this.myCombo.Name = "myCombo";
this.myCombo.Size = new System.Drawing.Size(430, 28);
this.myCombo.Sorted = true;
this.myCombo.TabIndex = 0; phrase";

Setting data source

public MyForm(List<string> elem)
{
    InitializeComponent();
    populateColorsComboBox();
    PopulateComboBox(elem);
}

public void PopulateComboBox(List<string> list )
{
    this.myCombo.DataSource = null;
    this.myCombo.DisplayMember = "text";
    this.myCombo.DataSource = list;
}

解决方案

Is Main(string[] args) really your entry point?

Maybe you have another Main() overload with no parameters. Or some other Main() in another class. Please open Project properties and look for the start object.

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