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CTRL-A select all text in textBox

OK I would like CTRL-A (on keyboard) to select all the text in my textBox1. Right now CTRL-A does nothing, even though my cursor is in the textBox1.
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deleyd
Asked:
deleyd
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3 Solutions
 
Paul MacDonaldDirector, Information SystemsCommented:
Is the text selectable?  CTRL-A should work by default, I believe...
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Rikin ShahMicrosoft Dynamics CRM ConsultantCommented:
Hi deleyd,

Try this-
        private void textBox1_keyDown(object sender, KeyEventArgs e)
        {
            if (e.Control & e.KeyCode == Keys.A)
                textBox1.SelectAll();
        }

Regards,
Rikin.
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käµfm³d 👽Commented:
Are you doing any key press filtering? Barring that, I'd have to agree with paulmacd.
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deleydAuthor Commented:
OK I'll have a look at the textBox parameters. Maybe there's a setting somewhere I need to set from False to True.
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käµfm³d 👽Commented:
On further inspection, maybe it doesn't. I created a quick project, and it seems the key combination does not work as one would expect--though copy and paste key combinations did. It seems you may need rikin_shah's logic after all.
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deleydAuthor Commented:
Hmm, I don't see anything. I see AcceptsReturn and AcceptsTab. Nothing about selectable.
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nepaluzCommented:
set the form's keypreview to true and handle the keyup event of the form. In there, check for the CTRL-A combination and also whether the textbox is currently selected then simply do copy textbox.text to clipboard
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käµfm³d 👽Commented:
You shouldn't need KeyPreview for this task. KeyPreview is for the form to have a peek at (and possibly handle/suppress) the key being pressed before the control which is to process the key press receives the actual message stating a key was pressed.
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Mike TomlinsonMiddle School Assistant TeacherCommented:
Ctrl-A works for me:  VS2010 on Win 7.
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deleydAuthor Commented:
Hmm, very strange it works for Idle_Mind. I have VS2010 on Vista. CTRL-A works for other programs.

Here's my Form1.Designer.cs stripped down:
  partial class Form1
  {
    private System.ComponentModel.IContainer components = null;

    protected override void Dispose(bool disposing)
    {
      if (disposing && (components != null))
      {
        components.Dispose();
      }
      base.Dispose(disposing);
    }

    #region Windows Form Designer generated code

    private void InitializeComponent()
    {
      this.textBox1 = new System.Windows.Forms.TextBox();
      this.textBox2 = new System.Windows.Forms.TextBox();
      this.SuspendLayout();
      //
      // textBox1
      //
      this.textBox1.Font = new System.Drawing.Font("Times New Roman", 26.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
      this.textBox1.Location = new System.Drawing.Point(9, 12);
      this.textBox1.Multiline = true;
      this.textBox1.Name = "textBox1";
      this.textBox1.Size = new System.Drawing.Size(669, 52);
      this.textBox1.TabIndex = 48;
      //
      // textBox2
      //
      this.textBox2.AcceptsReturn = true;
      this.textBox2.AcceptsTab = true;
      this.textBox2.Font = new System.Drawing.Font("Microsoft Sans Serif", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
      this.textBox2.Location = new System.Drawing.Point(12, 92);
      this.textBox2.Multiline = true;
      this.textBox2.Name = "textBox2";
      this.textBox2.Size = new System.Drawing.Size(666, 50);
      this.textBox2.TabIndex = 51;
      //
      // Form1
      //
      this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
      this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
      this.ClientSize = new System.Drawing.Size(703, 338);
      this.Controls.Add(this.textBox2);
      this.Controls.Add(this.textBox1);
      this.Name = "Form1";
      this.Text = "Form1";
      this.ResumeLayout(false);
      this.PerformLayout();

    }

    #endregion

    private System.Windows.Forms.TextBox textBox1;
    private System.Windows.Forms.TextBox textBox2;
  }
}

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käµfm³d 👽Commented:
Ctrl-A works for me:  VS2010 on Win 7.
My test was in XP, VS 2008. I didn't investigate too deeply, but the test was just a form with a TextBox--no logic.
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Mike TomlinsonMiddle School Assistant TeacherCommented:
I didn't delve too deeply either; just a form with two textboxes and a button (no code).  It's possible that placing a different type of control on the form could be causing this issue.
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deleydAuthor Commented:
OK I tested and found if I make a test form with two textBoxes, and both textBoxes are Multiline text boxes, then CTRL-A doesn't work for either textbox. I wonder why that is?
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Naman GoelCommented:
Yes, It's working even for me, My .net framework version is 2.0, IDE and OS doesn't matter in this case, the only thing is current focus should be on textbox

Here is the code for you

using System.Windows.Forms;

namespace WindowsFormsApplication1
{
    public partial class Form2 : Form
    {
        private TextBox textBox1;

    
        public Form2()
        {
            InitializeComponent();
        }
      

        private void InitializeComponent()
        {
            this.textBox1 = new System.Windows.Forms.TextBox();
            this.SuspendLayout();
            // 
            // textBox1
            // 
            this.textBox1.Location = new System.Drawing.Point(23, 44);
            this.textBox1.Name = "textBox1";
            this.textBox1.Size = new System.Drawing.Size(100, 20);
            this.textBox1.TabIndex = 0;
            // 
            // Form2
            // 
            this.ClientSize = new System.Drawing.Size(284, 262);
            this.Controls.Add(this.textBox1);
            this.Name = "Form2";
            this.ResumeLayout(false);
            this.PerformLayout();

        }

      

    }
}

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and if you want to  select all text in textbox even without having focus on textbox then you should set KeyPreview property to true and handle keyboard event on keydown like following code

using System.Windows.Forms;

namespace WindowsFormsApplication1
{
    public partial class Form2 : Form
    {
        private Button button1;
        private TextBox textBox1;

    
        public Form2()
        {
            InitializeComponent();
        }
      

        private void InitializeComponent()
        {
            this.textBox1 = new System.Windows.Forms.TextBox();
            this.button1 = new System.Windows.Forms.Button();
            this.SuspendLayout();
            // 
            // textBox1
            // 
            this.textBox1.Location = new System.Drawing.Point(23, 44);
            this.textBox1.Name = "textBox1";
            this.textBox1.Size = new System.Drawing.Size(100, 20);
            this.textBox1.TabIndex = 0;
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(34, 86);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(75, 23);
            this.button1.TabIndex = 1;
            this.button1.Text = "button1";
            this.button1.UseVisualStyleBackColor = true;
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // Form2
            // 
            this.ClientSize = new System.Drawing.Size(284, 262);
            this.Controls.Add(this.button1);
            this.Controls.Add(this.textBox1);
            this.KeyPreview = true;
            this.Name = "Form2";
            this.KeyDown += new System.Windows.Forms.KeyEventHandler(this.Form2_KeyDown);
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        private void Form2_KeyDown(object sender, KeyEventArgs e)
        {
            if (textBox1.Focused == false && textBox1.Text.Length > 0 && e.KeyCode == Keys.A && e.Control== true)
            {
                textBox1.SelectAll();
                textBox1.Select();
            }
        }

       

      

    }
}

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deleydAuthor Commented:
OK I worked around it for now using your ideas thank you for the help.
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