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How to access controls of dynamically added user controls in a panel in C#?


How to access controls of dynamically added user controls in a panel in C#?

By : Viren Patel
Date : November 20 2020, 04:01 AM
this one helps. You can handle the retrieval of checkbox data inside the UserControl and store it in a publicly accessible data object
code :
public class VehicleInfo
{
    public bool allowdrive {get; set; }
    public string vehicle {get; set; }
}

public partial class Vehicle_Bar : UserControl
{   
    public VehicleInfo vehicleInfo;

    public Vehicle_Bar(string vehicle)
    {
        vehicleInfo = new VehicleInfo(){
            vehicle = vehicle,
            allowdrive = false
        };

        InitializeComponent();
    }

    private void Vehicle_Bar_Load(object sender, EventArgs e)
    {
        lblType.Text = vehicleInfo.vehicle;
    }

    //Handle checkbox click event to set the value of "allowdrive"
}
Console.WriteLine(VTB.vehicleInfo.allowdrive);


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Controlling layout of dynamically added controls in asp:panel

Controlling layout of dynamically added controls in asp:panel


By : Anjon Mahamood
Date : March 29 2020, 07:55 AM
may help you . I'm adding a serires of asp:literal and asp:textbox controls to a panel in code as below (the eventual aim being to add only some of the controls depending on the user): , For each control added You will have to add something like
code :
pnl.Controls.Add(new LiteralControl("<br/>"));
Panel and User Controls vs load User Controls dynamically

Panel and User Controls vs load User Controls dynamically


By : user2931071
Date : March 29 2020, 07:55 AM
Hope that helps I would prefer option A. Loading controls dynamically and recreate them in postbacks is always much more complicated and error-prone than switching the visibility of controls in aspx-markup.
I must admit that i don't understand why you are making a difference between a Panel and a Placeholder. The major difference is only that a Panel is rendered as a DIV and a PlaceHolder has no html at all.
Change values of dynamically added controls in winform c#.net application, how to track dynamically added controls

Change values of dynamically added controls in winform c#.net application, how to track dynamically added controls


By : Noajm
Date : March 29 2020, 07:55 AM
wish help you to fix your issue Try something like this, which will add 11 new text boxes (or any other control you want):
code :
int NumberOfTextBoxes = 11;
TextBox[] DynamicTextBoxes = new TextBox[NumberOfTextBoxes];
int ndx = 0;

while (ndx < NumberOfTextBoxes) 
{
    DynamicTextBoxes[ndx] = new TextBox();
    DynamicTextBoxes[ndx].Name = "TextBox" + ndx.ToString();
    // You can set TextBox value here:
    // DynamicTextBoxes[ndx].Text = "My Value";
    tableLayoutPanel1.Controls.Add(DynamicTextBoxes[ndx]);
    ndx++;
}
foreach (Control c in TableLayoutPanel1.Controls)
{
    if (c is TextBox)
    {
        TextBox TextBoxControl = (TextBox)c;

        // This will modify the value of the 3rd text box we added
        if (TextBoxControl.Name.Equals("TextBox3"))      
            TextBoxControl.Text = "My Value";
    }
}
Why are my dynamically added user controls showing having their ascx controls as null?

Why are my dynamically added user controls showing having their ascx controls as null?


By : test account
Date : March 29 2020, 07:55 AM
this one helps. Use the relative path overload of the LoadControl method instead, as noted here.
http://msdn.microsoft.com/en-us/library/ewtd66a0.aspx
Mousewheel scroll in panel with dynamically added picturebox controls?

Mousewheel scroll in panel with dynamically added picturebox controls?


By : user3823926
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , The panel scrolls with the mousewheel when it or a control within it has focus. The problem you are running into is that neither the PictureBox nor the panel receives focus when you click on it. If you call select() on the panel, you will see that the mouse wheel starts working again.
One possible solution would be to select the panel whenever the mouse cursor enters it, by handling the Control.MouseEnter event:
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