Spread隐藏C列后，C列消失，无法显示，无法恢复

Spread隐藏C列后，C列消失，无法显示，无法恢复，第三幅图C列消失后，再也点不到C列了。且代码里也没有写C列被隐藏的代码。请问如何恢复显示C列？操作步骤如图所示：
全部代码如下，代码中没有对C列进行隐藏的部分：Form2.Designer.cs:

1. namespace CustomizedLoading
   
2. {
   
3.     partial class Form2
   
4.     {
   
5.         /// <summary>
   
6.         /// Required designer variable.
   
7.         /// </summary>
   
8.         private System.ComponentModel.IContainer components = null;
   
9. 
   
10.         /// <summary>
    
11.         /// Clean up any resources being used.
    
12.         /// </summary>
    
13.         /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
    
14.         protected override void Dispose(bool disposing)
    
15.         {
    
16.             if (disposing && (components != null))
    
17.             {
    
18.                 components.Dispose();
    
19.             }
    
20.             base.Dispose(disposing);
    
21.         }
    
22. 
    
23.         #region Windows Form Designer generated code
    
24. 
    
25.         /// <summary>
    
26.         /// Required method for Designer support - do not modify
    
27.         /// the contents of this method with the code editor.
    
28.         /// </summary>
    
29.         private void InitializeComponent()
    
30.         {
    
31.             FarPoint.Win.Spread.TipAppearance tipAppearance1 = new FarPoint.Win.Spread.TipAppearance();
    
32.             System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(Form2));
    
33.             this.fpSpread1 = new FarPoint.Win.Spread.FpSpread();
    
34.             this.fpSpread1_Sheet1 = new FarPoint.Win.Spread.SheetView();
    
35.             ((System.ComponentModel.ISupportInitialize)(this.fpSpread1)).BeginInit();
    
36.             ((System.ComponentModel.ISupportInitialize)(this.fpSpread1_Sheet1)).BeginInit();
    
37.             this.SuspendLayout();
    
38.             //
    
39.             // fpSpread1
    
40.             //
    
41.             this.fpSpread1.Location = new System.Drawing.Point(86, 31);
    
42.             this.fpSpread1.Name = "fpSpread1";
    
43.             this.fpSpread1.Sheets.AddRange(new FarPoint.Win.Spread.SheetView[] {
    
44.             this.fpSpread1_Sheet1});
    
45.             this.fpSpread1.Size = new System.Drawing.Size(417, 290);
    
46.             this.fpSpread1.TabIndex = 0;
    
47.             tipAppearance1.BackColor = System.Drawing.SystemColors.Info;
    
48.             tipAppearance1.Font = new System.Drawing.Font("MS UI Gothic", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(128)));
    
49.             tipAppearance1.ForeColor = System.Drawing.SystemColors.InfoText;
    
50.             this.fpSpread1.TextTipAppearance = tipAppearance1;
    
51.             this.fpSpread1.CellClick += new FarPoint.Win.Spread.CellClickEventHandler(this.fpSpread1_CellClick);
    
52.             //
    
53.             // fpSpread1_Sheet1
    
54.             //
    
55.             this.fpSpread1_Sheet1.Models = ((FarPoint.Win.Spread.SheetView.DocumentModels)(resources.GetObject("fpSpread1_Sheet1.Models")));
    
56.             this.fpSpread1_Sheet1.SheetName = "Sheet1";
    
57.             //
    
58.             // Form2
    
59.             //
    
60.             this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
    
61.             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
    
62.             this.ClientSize = new System.Drawing.Size(624, 415);
    
63.             this.Controls.Add(this.fpSpread1);
    
64.             this.Name = "Form2";
    
65.             this.Text = "Form2";
    
66.             this.Load += new System.EventHandler(this.Form2_Load);
    
67.             ((System.ComponentModel.ISupportInitialize)(this.fpSpread1)).EndInit();
    
68.             ((System.ComponentModel.ISupportInitialize)(this.fpSpread1_Sheet1)).EndInit();
    
69.             this.ResumeLayout(false);
    
70. 
    
71.         }
    
72. 
    
73.         #endregion
    
74. 
    
75.         private FarPoint.Win.Spread.FpSpread fpSpread1;
    
76.         private FarPoint.Win.Spread.SheetView fpSpread1_Sheet1;
    
77. 
    
78. 
    
79.     }
    
80. }

复制代码

已解决：
如图：