How to get height of control after (anchored or docked )?

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I am creating custom datagridview control for a project . i have to calculate number of rows to be added to avoid vertical scrollbar . it works when user control is not anchored or docked But when (anchored or docked ) then it fails .

when i check calculation , control size gives size of control before dock or anchor takes place .
how to get actual run-time size of control after docking or anchoring takes place ??

Posted 28-May-15 3:10am

Surendra Adhikari SA

Updated 28-May-15 3:12am

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Sergey Alexandrovich Kryukov 28-May-15 11:02am

Why? Good layout design does not require this information. Roughly speaking: always dock everything.
—SA

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OriginalGriff · Accepted Answer · 2015-05-28T08:41:00

Simple: handle the Resize event.

C#

public partial class MyUserControl : UserControl
    {
    public MyUserControl()
        {
        InitializeComponent();
        ShowSize("Constructor");
        }
    private void ShowSize(string from)
        {
        Debug.WriteLine("{0} : ({1}, {2})", from, Width, Height);
        }
    private void MyUserControl_Load(object sender, EventArgs e)
        {
        ShowSize("Load");
        }
    private void MyUserControl_Resize(object sender, EventArgs e)
        {
        ShowSize("Resize");
        }
    }

Add to a form, and set as Dock:Fill in the designer.
Run the app, and you get:

C#

Constructor : (150, 150)
Resize : (357, 188)
Load : (357, 188)
Resize : (531, 381)

Where the Form original size was: (373, 226) and the form was resized in the Form Load event to (547, 419)