Visual Studio 2010 上的图像按钮

Question

我正在尝试从 Visual Studio 2010 上的 [设计] 视图创建一个包含图像但不包含文本的按钮。放下按钮，然后单击“图像属性”，从资源文件中选择一个 png 图像，但该属性始终保持为空，并且该按钮在 [设计] 视图或编译的程序中都没有图像。

我尝试使用以下方法在 Form.Designer.cs 文件上设置图像：

    // 
    // button1
    // 
    this.button1.Location = new System.Drawing.Point(73, 11);
    this.button1.Name = "button1";
    this.button1.Size = new System.Drawing.Size(39, 34);
    this.button1.TabIndex = 10;
    this.button1.UseVisualStyleBackColor = true;
    this.button1.Image = Properties.Resources.close_project_img;

当我转到 [设计] 视图时，出现错误：

To prevent possible data loss before loading the designer, the following errors must be resolved: 

Projectitem unavailable.     

Instances of this error (1)  

1.   Show Call Stack  

at EnvDTE.ProjectItem.get_FileCount()
at Microsoft.VisualStudio.Design.Serialization.ResXGlobalObjectProvider.GetFileNameForProjectItem(ProjectItem item)
at Microsoft.VisualStudio.Design.Serialization.ResXGlobalObject.BuildType()
at Microsoft.VisualStudio.Design.Serialization.ResXGlobalObject.GetObjectType()
at Microsoft.VisualStudio.Shell.Design.GlobalType.get_ObjectType()
at Microsoft.VisualStudio.Shell.Design.GlobalObject.GetHashCode()
at System.Collections.Generic.ObjectEqualityComparer`1.GetHashCode(T obj)
at System.Collections.Generic.Dictionary`2.FindEntry(TKey key)
at Microsoft.VisualStudio.Shell.Design.GlobalObjectService.GetGlobalObjects(Type baseType)
at Microsoft.VisualStudio.Design.Serialization.CodeDom.AggregateTypeResolutionService.GetTypeFromGlobalObjects(String name, Boolean throwOnError, Boolean ignoreCase)
at Microsoft.VisualStudio.Design.Serialization.CodeDom.AggregateTypeResolutionService.GetType(String name, Boolean throwOnError, Boolean ignoreCase)
at Microsoft.VisualStudio.Design.Serialization.CodeDom.AggregateTypeResolutionService.GetType(String name)
at System.ComponentModel.Design.Serialization.DesignerSerializationManager.GetRuntimeType(String typeName)
at System.ComponentModel.Design.Serialization.DesignerSerializationManager.GetType(String typeName)
at System.ComponentModel.Design.Serialization.DesignerSerializationManager.System.ComponentModel.Design.Serialization.IDesignerSerializationManager.GetType(String typeName)
at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeExpression(IDesignerSerializationManager manager, String name, CodeExpression expression)
at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializePropertyReferenceExpression(IDesignerSerializationManager manager, CodePropertyReferenceExpression propertyReferenceEx, Boolean reportError)
at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeExpression(IDesignerSerializationManager manager, String name, CodeExpression expression)
at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializePropertyAssignStatement(IDesignerSerializationManager manager, CodeAssignStatement statement, CodePropertyReferenceExpression propertyReferenceEx, Boolean reportError)
at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeAssignStatement(IDesignerSerializationManager manager, CodeAssignStatement statement)
at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeStatement(IDesignerSerializationManager manager, CodeStatement statement)  

Help with this error  

Could not find an associated help topic for this error.

我可以单击“忽略并继续”，并且 [设计] 视图打开正常，但是按钮不会在该视图上显示图像（它确实在编译的程序中显示它）。

我在这里做错了什么？

Answer 1

您不应直接编辑 Form.Designer.cs，因为它会被设计器覆盖。当您打开设计器时，设计器实际上运行 Form.designer.cs 文件中的代码。由于该代码实际上是由vs2010运行的，它的环境有点不同

只是一个测试，尝试从button_click事件方法中设置图像属性，可能是由于某种原因找不到图像

Answer 2

我关闭了项目，删除了 resources.resx 和 resources.designer.cs，重新创建了资源文件，现在工作正常，不确定问题是什么。

Answer 3

重新启动 Visual Studio .NET

我也遇到了同样的问题。调用堆栈不会导致或显示任何有助于跟踪设计器文件中问题的信息。我只是关闭了 Visual Studio 2017，然后重新打开了该项目。问题自行解决。