C# - Update textbox on forms created in code
I have a main form called mainForm - this runs my entire app. In this form I create other forms like this:
......
......
Form[] formMessage = new Form[10];
int formNumber =开发者_JAVA百科 0;
System.Windows.Forms.Button btnCancel;
System.Windows.Forms.Button btnClose;
System.Windows.Forms.Label lblTimer;
System.Windows.Forms.Button btnOK;
System.Windows.Forms.Panel panel1;
System.Windows.Forms.Label lblMessage;
System.Windows.Forms.PictureBox pictureBox1;
System.Windows.Forms.Label lblTitle;
......
......
public void CreateForm(Form form2)
{
this.btnCancel = new System.Windows.Forms.Button();
this.btnClose = new System.Windows.Forms.Button();
this.lblTimer = new System.Windows.Forms.Label();
this.btnOK = new System.Windows.Forms.Button();
this.panel1 = new System.Windows.Forms.Panel();
this.lblMessage = new System.Windows.Forms.Label();
this.pictureBox1 = new System.Windows.Forms.PictureBox();
this.lblTitle = new System.Windows.Forms.Label();
//
........
//
// lblTimer
//
this.lblTimer.AutoSize = true;
this.lblTimer.BackColor = System.Drawing.Color.Transparent;
this.lblTimer.Font = new System.Drawing.Font("Tahoma", 9.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.lblTimer.Location = new System.Drawing.Point(9, 120);
this.lblTimer.Name = "lblTimer";
this.lblTimer.Size = new System.Drawing.Size(0, 16);
this.lblTimer.Visible = Show_Timer;
this.lblTimer.TabIndex = 4;
form2.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
form2.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
form2.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(224)))), ((int)(((byte)(224)))), ((int)(((byte)(224)))));
form2.ClientSize = new System.Drawing.Size(400, 142);
form2.ControlBox = false;
form2.Controls.Add(this.pictureBox1);
form2.Controls.Add(this.panel1);
form2.Controls.Add(this.btnOK);
form2.Controls.Add(this.lblTimer);
form2.Controls.Add(this.btnCancel);
form2.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
form2.Opacity = 0.98;
form2.ShowInTaskbar = false;
form2.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
form2.Tag = formNumber;
form2.Paint += new System.Windows.Forms.PaintEventHandler(this.MyMessageBox_Paint);
}
private void FNeventTrigger(System.Object sender, System.EventArgs e)
{
formMessage[formNumber] = new Form();
CreateForm(formMessage[formNumber]);
formMessage[formNumber].Show();
formNumber++;
if (formNumber == 10)
formNumber = 0;
}
public void lbl_timer_UpdateText()
{
this.lblTimer.Text = newText
}
I use the FNeventRigger to create my form, and I can have upto 10 of them open at each given time - I use this for showing count down timers.
The problem I have is how do I show the count down timer of each form? If I use : this.lblTimer.Text = newText, then only the newest form that was opened displays the correct timer.... the other forms lblTimer.Text stop functioning.
Is there a way to address all the lblTimer.Text on all forms opened on the array?
Thanks,
Create your own form class which defines the Label an a method to update this method. and then initiate all your forms using this new MyBaseForm
public MyBaseForm : Form
{
private Label lblTimer;
public MyBaseForm()
{
lblTimer = new Label();
Controls.Add(lblTimer);
}
public void UpdateTimerText(string text)
{
lblTimer.Text = text;
}
}
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