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Form Constructor ()
.NET Framework (current version)
Initializes a new instance of the Form class.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
The default size of a form is 300 pixels in height and 300 pixels in width.
The following code example creates a new instance of a Form and calls the ShowDialog method to display the form as a dialog box. The example sets the FormBorderStyle, AcceptButton, CancelButton, MinimizeBox, MaximizeBox, and StartPosition properties to change the appearance and functionality of the form to a dialog box. The example also sets uses the Add method of the form's Controls collection to add two Button controls. The example uses the HelpButton property to display a help button in the caption bar of the dialog box.
public: void CreateMyForm() { // Create a new instance of the form. Form^ form1 = gcnew Form; // Create two buttons to use as the accept and cancel buttons. Button^ button1 = gcnew Button; Button^ button2 = gcnew Button; // Set the text of button1 to "OK". button1->Text = "OK"; // Set the position of the button on the form. button1->Location = Point(10,10); // Set the text of button2 to "Cancel". button2->Text = "Cancel"; // Set the position of the button based on the location of button1. button2->Location = Point( button1->Left, button1->Height + button1->Top + 10 ); // Set the caption bar text of the form. form1->Text = "My Dialog Box"; // Display a help button on the form. form1->HelpButton = true; // Define the border style of the form to a dialog box. form1->FormBorderStyle = ::FormBorderStyle::FixedDialog; // Set the MaximizeBox to false to remove the maximize box. form1->MaximizeBox = false; // Set the MinimizeBox to false to remove the minimize box. form1->MinimizeBox = false; // Set the accept button of the form to button1. form1->AcceptButton = button1; // Set the cancel button of the form to button2. form1->CancelButton = button2; // Set the start position of the form to the center of the screen. form1->StartPosition = FormStartPosition::CenterScreen; // Add button1 to the form. form1->Controls->Add( button1 ); // Add button2 to the form. form1->Controls->Add( button2 ); // Display the form as a modal dialog box. form1->ShowDialog(); }
.NET Framework
Available since 1.1
Available since 1.1
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