C# Visual Studio Designer无法打开文件，尽管它是文件中的第一个也是唯一一个类

然而，某些不兼容的行为也可能导致此问题

在我的例子中，不兼容的行为是由实体框架上一些可能奇怪的（混乱的映射）引起的

我已经做了尽职调查，以确保数据模型和EF模型之间一一对应（甚至重新创建了两次）

当我注释掉某段代码时，项目将生成并运行

public partial class TestForm : SecureForm
{
    private myEntities _db = new myEntities();

    public TestForm()
    {
        InitializeComponent();

        PopulateTestsList();
    }

    private void PopulateTestsList()
    {
        listViewTypes.Items.Clear();

        var query = from q in _db.Types orderby q.TypeName select q;

        foreach (Type dt in query)
        {
            ListViewItem lvi = new ListViewItem(new string[]
            {
            dt.TypeName
            });
            lvi.Tag = dt;
            listViewTypes.Items.Add(lvi);
        }

    }

    private void buttonAdd_Click(object sender, EventArgs e)
    {
        TestEditForm myEditForm = new TestEditForm(_db);
        if (myEditForm.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            PopulateTestsList();
    }

    private void buttonEdit_Click(object sender, EventArgs e)
    {
        if (listViewTypes.SelectedItems.Count > 0)
        {
            Test tsdt = listViewTypes.SelectedItems[0].Tag as Test;
            if (myEditForm != null)
            {
                TestEditForm myEditForm = new TestEditForm(_db, mysForm);
                if (myEditForm.ShowDialog() == System.Windows.Forms.DialogResult.OK)
                    PopulateTestsList();
            }
        }
    }
}

它仍然没有出现在设计师面前

这是designer.cs供参考

partial class TestForm
{
    /// <summary>
    /// Required designer variable.
    /// </summary>
    private System.ComponentModel.IContainer components = null;

    /// <summary>
    /// Clean up any resources being used.
    /// </summary>
    /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
    protected override void Dispose(bool disposing)
    {
        if (disposing && (components != null))
        {
            components.Dispose();
        }
        base.Dispose(disposing);
    }

    #region Windows Form Designer generated code

    /// <summary>
    /// Required method for Designer support - do not modify
    /// the contents of this method with the code editor.
    /// </summary>
    private void InitializeComponent()
    {
        this.buttonDelete = new System.Windows.Forms.Button();
        this.buttonEdit = new System.Windows.Forms.Button();
        this.buttonAdd = new System.Windows.Forms.Button();
        this.listViewTypes = new System.Windows.Forms.ListView();
        this.columnName = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
        this.label1 = new System.Windows.Forms.Label();
        this.SuspendLayout();
        // 
        // buttonDelete
        // 
        this.buttonDelete.Location = new System.Drawing.Point(304, 86);
        this.buttonDelete.Name = "buttonDelete";
        this.buttonDelete.Size = new System.Drawing.Size(75, 23);
        this.buttonDelete.TabIndex = 9;
        this.buttonDelete.Text = "Delete";
        this.buttonDelete.UseVisualStyleBackColor = true;
        this.buttonDelete.Click += new System.EventHandler(this.buttonDelete_Click);
        // 
        // buttonEdit
        // 
        this.buttonEdit.Location = new System.Drawing.Point(304, 56);
        this.buttonEdit.Name = "buttonEdit";
        this.buttonEdit.Size = new System.Drawing.Size(75, 23);
        this.buttonEdit.TabIndex = 8;
        this.buttonEdit.Text = "Edit";
        this.buttonEdit.UseVisualStyleBackColor = true;
        this.buttonEdit.Click += new System.EventHandler(this.buttonEdit_Click);
        // 
        // buttonAdd
        // 
        this.buttonAdd.Location = new System.Drawing.Point(304, 26);
        this.buttonAdd.Name = "buttonAdd";
        this.buttonAdd.Size = new System.Drawing.Size(75, 23);
        this.buttonAdd.TabIndex = 7;
        this.buttonAdd.Text = "Add";
        this.buttonAdd.UseVisualStyleBackColor = true;
        this.buttonAdd.Click += new System.EventHandler(this.buttonAdd_Click);
        // 
        // listViewTypes
        // 
        this.listViewTypes.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] {
        this.columnName});
        this.listViewTypes.FullRowSelect = true;
        this.listViewTypes.HideSelection = false;
        this.listViewTypes.Location = new System.Drawing.Point(12, 26);
        this.listViewTypes.Name = "listViewTypes";
        this.listViewTypes.Size = new System.Drawing.Size(274, 205);
        this.listViewTypes.TabIndex = 6;
        this.listViewTypes.UseCompatibleStateImageBehavior = false;
        this.listViewTypes.View = System.Windows.Forms.View.Details;
        // 
        // columnName
        // 
        this.columnName.Text = "Document Type";
        this.columnName.Width = 270;
        // 
        // label1
        // 
        this.label1.AutoSize = true;
        this.label1.Location = new System.Drawing.Point(12, 10);
        this.label1.Name = "label1";
        this.label1.Size = new System.Drawing.Size(79, 13);
        this.label1.TabIndex = 5;
        this.label1.Text = "Test Standards";
        // 
        // TestsForm
        // 
        this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
        this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
        this.ClientSize = new System.Drawing.Size(395, 242);
        this.Controls.Add(this.buttonDelete);
        this.Controls.Add(this.buttonEdit);
        this.Controls.Add(this.buttonAdd);
        this.Controls.Add(this.listViewTypes);
        this.Controls.Add(this.label1);
        this.Name = "TestsForm";
        this.Opacity = 1D;
        this.Text = "Test Standards";
        this.ResumeLayout(false);
        this.PerformLayout();

    }

    #endregion

    private System.Windows.Forms.Button buttonDelete;
    private System.Windows.Forms.Button buttonEdit;
    private System.Windows.Forms.Button buttonAdd;
    private System.Windows.Forms.ListView listViewTypes;
    private System.Windows.Forms.ColumnHeader columnName;
    private System.Windows.Forms.Label label1;
}

部分类TestForm
{
/// 
///必需的设计器变量。
/// 
private System.ComponentModel.IContainer components=null；
/// 
///清理所有正在使用的资源。
/// 
///如果应释放托管资源，则为true；否则为false。
受保护的覆盖无效处置（布尔处置）
{
if（处理和（组件！=null））
{
组件。Dispose（）；
}
基地。处置（处置）；
}
#区域Windows窗体设计器生成的代码
/// 
///设计器支持所需的方法-不修改
///此方法的内容与代码编辑器一起使用。
/// 
私有void InitializeComponent（）
{
this.buttonDelete=new System.Windows.Forms.Button（）；
this.buttonEdit=new System.Windows.Forms.Button（）；
this.buttonad=new System.Windows.Forms.Button（）；
this.listViewTypes=new System.Windows.Forms.ListView（）；
this.columnName=（（System.Windows.Forms.ColumnHeader）（新的System.Windows.Forms.ColumnHeader（））；
this.label1=new System.Windows.Forms.Label（）；
这个.SuspendLayout（）；
// 
//钮扣删除
// 
this.buttonDelete.Location=新系统图纸点（304,86）；
this.buttonDelete.Name=“buttonDelete”；
this.buttonDelete.Size=新系统图纸尺寸（75,23）；
this.buttonDelete.TabIndex=9；
this.buttonDelete.Text=“删除”；
this.buttonDelete.UseVisualStyleBackColor=true；
this.buttonDelete.Click+=新系统.EventHandler（this.buttonDelete\u Click）；
// 
//扣紧
// 
this.buttonEdit.Location=新系统图点（304,56）；
this.buttonEdit.Name=“buttonEdit”；
this.buttonEdit.Size=新系统图尺寸（75,23）；
this.buttonEdit.TabIndex=8；
this.buttonEdit.Text=“编辑”；
this.buttonEdit.UseVisualStyleBackColor=true；
this.buttonEdit.Click+=new System.EventHandler（this.buttonEdit\u Click）；
// 
//钮扣
// 
this.buttonAdd.Location=新系统图纸点（304,26）；
this.buttonAdd.Name=“buttonAdd”；
this.buttonAdd.Size=新系统图纸尺寸（75,23）；
this.buttonad.TabIndex=7；
this.buttonad.Text=“添加”；
this.buttonad.UseVisualStyleBackColor=true；
this.buttonAdd.Click+=新系统.EventHandler（this.buttonAdd\u Click）；
// 
//listViewTypes
// 
this.listViewTypes.Columns.AddRange（新的System.Windows.Forms.ColumnHeader[]{
此字段为.columnName}）；
this.listViewTypes.FullRowSelect=true；
this.listViewTypes.HideSelection=false；
this.listViewTypes.Location=新系统.Drawing.Point（12,26）；
this.listViewTypes.Name=“listViewTypes”；
this.listViewTypes.Size=新系统.Drawing.Size（274205）；
this.listViewTypes.TabIndex=6；
this.listViewTypes.UseCompatibleStateImageBehavior=false；
this.listViewTypes.View=System.Windows.Forms.View.Details；
// 
//列名
// 
this.columnName.Text=“文档类型”；
this.columnName.Width=270；
// 
//标签1
// 
this.label1.AutoSize=true；
this.label1.Location=新系统图纸点（12,10）；
this.label1.Name=“label1”；
this.label1.Size=新系统图纸尺寸（79,13）；
this.label1.TabIndex=5；
this.label1.Text=“测试标准”；
// 
//测试表单
// 
此.AutoScaleDimensions=新系统.Drawing.SizeF（6F，13F）；
this.AutoScaleMode=System.Windows.Forms.AutoScaleMode.Font；
this.ClientSize=新系统.Drawing.Size（395242）；
this.Controls.Add（this.buttonDelete）；
this.Controls.Add（this.buttonEdit）；
this.Controls.Add（this.buttonAdd）；
this.Controls.Add（this.listViewTypes）；
this.Controls.Add（this.label1）；
this.Name=“TestsForm”；
不透明度=1D；
此.Text=“测试标准”；
此选项为.resume布局（false）；
这个。执行布局（）；
}
#端区
private System.Windows.Forms.Button按钮删除；
private System.Windows.Forms.Button buttonEdit；
private System.Windows.Forms.Button按钮添加；
private System.Windows.Forms.ListView listViewTypes；
private System.Windows.Forms.ColumnHeader columnName；
private System.Windows.Forms.label1；
}

代码分析显示缺少表单（MSBuild没有）。MSBUILD将表单编译成一个exe，该exe有点失效（在损坏的实体上）

该实体具有名称和ID属性。名称和ID都正确映射，集合被复数化并加载到列表中

如何识别损坏的实体和/或

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如何识别代码中的不兼容行为

您可以发布整个类文件吗？嘿，Ron，刚刚发布了。您共享的代码中没有问题。问题可能存在于

SecureForm

…SecureForm是一个跨所有表单实现的经过测试的接口。我在这里没有做任何不同的事情（与其他形式相反）好的观点虽然奇怪，但重新创建了整个形式。工作。