1 ContainerControl.ActiveControl 属性 2 3 获取或设置容器控件上的活动控件。 4 5 命名空间: System.Windows.Forms
示例:
1 namespace _10_获取带有焦点的控件 2 { 3 partial class Form1 4 { 5 /// <summary> 6 /// 必需的设计器变量。 7 /// </summary> 8 private System.ComponentModel.IContainer components = null; 9 10 /// <summary> 11 /// 清理所有正在使用的资源。 12 /// </summary> 13 /// <param name="disposing">如果应释放托管资源,为 true;否则为 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 窗体设计器生成的代码 24 25 /// <summary> 26 /// 设计器支持所需的方法 - 不要修改 27 /// 使用代码编辑器修改此方法的内容。 28 /// </summary> 29 private void InitializeComponent() 30 { 31 this.components = new System.ComponentModel.Container(); 32 this.textBox1 = new System.Windows.Forms.TextBox(); 33 this.textBox2 = new System.Windows.Forms.TextBox(); 34 this.textBox3 = new System.Windows.Forms.TextBox(); 35 this.textBox4 = new System.Windows.Forms.TextBox(); 36 this.timer1 = new System.Windows.Forms.Timer(this.components); 37 this.SuspendLayout(); 38 // 39 // textBox1 40 // 41 this.textBox1.Location = new System.Drawing.Point(94, 41); 42 this.textBox1.Name = "textBox1"; 43 this.textBox1.Size = new System.Drawing.Size(159, 21); 44 this.textBox1.TabIndex = 1; 45 // 46 // textBox2 47 // 48 this.textBox2.Location = new System.Drawing.Point(94, 83); 49 this.textBox2.Name = "textBox2"; 50 this.textBox2.Size = new System.Drawing.Size(159, 21); 51 this.textBox2.TabIndex = 1; 52 // 53 // textBox3 54 // 55 this.textBox3.Location = new System.Drawing.Point(94, 136); 56 this.textBox3.Name = "textBox3"; 57 this.textBox3.Size = new System.Drawing.Size(159, 21); 58 this.textBox3.TabIndex = 1; 59 // 60 // textBox4 61 // 62 this.textBox4.Location = new System.Drawing.Point(94, 203); 63 this.textBox4.Name = "textBox4"; 64 this.textBox4.Size = new System.Drawing.Size(159, 21); 65 this.textBox4.TabIndex = 1; 66 // 67 // timer1 68 // 69 this.timer1.Enabled = true; 70 this.timer1.Tick += new System.EventHandler(this.timer1_Tick); 71 // 72 // Form1 73 // 74 this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F); 75 this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; 76 this.ClientSize = new System.Drawing.Size(352, 293); 77 this.Controls.Add(this.textBox4); 78 this.Controls.Add(this.textBox3); 79 this.Controls.Add(this.textBox2); 80 this.Controls.Add(this.textBox1); 81 this.Name = "Form1"; 82 this.Text = "Form1"; 83 this.ResumeLayout(false); 84 this.PerformLayout(); 85 86 } 87 88 #endregion 89 90 private System.Windows.Forms.TextBox textBox1; 91 private System.Windows.Forms.TextBox textBox2; 92 private System.Windows.Forms.TextBox textBox3; 93 private System.Windows.Forms.TextBox textBox4; 94 private System.Windows.Forms.Timer timer1; 95 } 96 }View Code
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace _10_获取带有焦点的控件 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void timer1_Tick(object sender, EventArgs e) { Console.WriteLine(this.ActiveControl.Name); } } }View Code