Inputbox in C #

In. NET Framework, there is no function similar to the inputbox function in VB. Although you can use the runtime reference of VB to use. Net except for VBProgramBut why not write a class to implement similar functions?

The following class implements functions similar to the inputbox function:

Using system;

Using system. Windows. forms;

 

Namespace Input

{

/// <Summary>

/// Summary of clsinputbox.

/// </Summary>

Public class inputbox: system. Windows. Forms. Form

{

Private system. Windows. Forms. textbox txtdata;

Private system. Windows. Forms. Label lblinfo;

Private system. componentmodel. Container components = NULL;

 

Private inputbox ()

{

Initializecomponent ();

}

 

Protected override void dispose (bool disposing)

{

If (disposing)

{

If (components! = NULL)

{

Components. Dispose ();

}

}

Base. Dispose (disposing );

}

 

Private void initializecomponent ()

{

This.txt DATA = new system. Windows. Forms. Textbox ();

This. lblinfo = new system. Windows. Forms. Label ();

This. suspendlayout ();

//

// Txtdata

//

This.txt data. font = new system. drawing. font ("", 10.5f, system. drawing. fontstyle. regular, system. drawing. graphicsunit. point, (system. byte) (134 )));

This.txt data. Location = new system. Drawing. Point (19, 8 );

This.txt data. Name = "txtdata ";

This.txt data. size = new system. Drawing. Size (317, 23 );

This.txt data. tabindex = 0;

This.txt data. Text = "";

This.txt data. keydown + = new system.windows.forms.keyeventhandler(this.txt data_keydown );

//

// Lblinfo

//

This. lblinfo. backcolor = system. Drawing. systemcolors. Info;

This. lblinfo. borderstyle = system. Windows. Forms. borderstyle. fixed3d;

This. lblinfo. flatstyle = system. Windows. Forms. flatstyle. system;

This. lblinfo. font = new system. drawing. font ("", 9f, system. drawing. fontstyle. regular, system. drawing. graphicsunit. point, (system. byte) (134 )));

This. lblinfo. forecolor = system. Drawing. color. Gray;

This. lblinfo. Location = new system. Drawing. Point (19, 32 );

This. lblinfo. Name = "lblinfo ";

This. lblinfo. size = new system. Drawing. Size (317, 16 );

This. lblinfo. tabindex = 1;

This. lblinfo. Text = "[enter] OK | [ESC] cancel ";

//

// Inputbox

//

This. autoscalebasesize = new system. Drawing. Size (6, 14 );

This. clientsize = new system. Drawing. Size (350, 48 );

This. controlbox = false;

This. Controls. Add (this. lblinfo );

This.controls.add(this.txt data );

This. formborderstyle = system. Windows. Forms. formborderstyle. fixeddialog;

This. Name = "inputbox ";

This. Text = "inputbox ";

This. resumelayout (false );

 

}

// Respond to the keyboard

Private void txtdata_keydown (Object sender, system. Windows. Forms. keyeventargs E)

{

If (E. keycode = keys. Enter)

{

This. Close ();

}

Else if (E. keycode = keys. Escape)

{

Txtdata. Text = string. empty;

This. Close ();

}

}

// Display inputbox

Public static string showinputbox (String title, string keyinfo)

{

Inputbox = new inputbox ();

Inputbox. Text = title;

If (keyinfo. Trim ()! = String. Empty)

Inputbox. lblinfo. Text = keyinfo;

Inputbox. showdialog ();

Return inputbox.txt data. text;

}

}

}

You can directly call the static method showinputbox of this class. The title parameter is the text of the dialog box, And the keyinfo parameter is the text of the label lblinfo (custom information can be displayed. The specific call is as follows:

Private void button_click (Object sender, system. eventargs E)

{

// Microsoft. VisualBasic. Interaction. inputbox ("type your name", "input", "", 0, 0 );

// Replace the text information you want to display with the string. Empty below.

String inmsg = input. inputbox. showinputbox ("input information", String. Empty );

// Check user input information

If (inmsg. Trim ()! = String. Empty)

{

MessageBox. Show (inmsg );

}

Else if

{

MessageBox. Show ("input is string. Empty ");

}

}