Enter a string of characters to analyze the characters in the string and how many times each character appears

I made a question for GF and did it myself.
Question:
Enter a string of characters to analyze which characters appear in the string and how many times each character appears.
Answer:
Using System;
Using System. Drawing;
Using System. Collections;
Using System. ComponentModel;
Using System. Windows. Forms;
Using System. Data;

Namespace yanysQustion
{
/// <Summary>
/// Summary of Form1.
/// </Summary>
Public class Form1: System. Windows. Forms. Form
{
Private System. Windows. Forms. Label label1;
Private System. Windows. Forms. Label label2;
Private System. Windows. Forms. Button button1;
Private System. Windows. Forms. Button button2;
Private System. Windows. Forms. Button button3;
Private System. Windows. Forms. Label label4;
Private System. Windows. Forms. ColorDialog colorDialog1;
Private System. Windows. Forms. TextBox t_scr;
Public System. Windows. Forms. TextBox t_res;
Private System. Windows. Forms. Button button4;
Public System. Windows. Forms. Label msg;
/// <Summary>
/// Required designer variables.
/// </Summary>
Private System. ComponentModel. Container components = null;

Public Form1 ()
{
//
// Required for Windows Form Designer support
//
InitializeComponent ();

//
// TODO: add Any constructor code after InitializeComponent calls
//
}

/// <Summary>
/// Clear all resources in use.
/// </Summary>
Protected override void Dispose (bool disposing)
{
If (disposing)
{
If (components! = Null)
{
Components. Dispose ();
}
}
Base. Dispose (disposing );
}

# Region code generated by Windows Form Designer
/// <Summary>
/// The designer supports the required methods-do not use the code editor to modify
/// Content of this method.
/// </Summary>
Private void InitializeComponent ()
{
This. t_scr = new System. Windows. Forms. TextBox ();
This. label1 = new System. Windows. Forms. Label ();
This. label2 = new System. Windows. Forms. Label ();
This. button1 = new System. Windows. Forms. Button ();
This. t_res = new System. Windows. Forms. TextBox ();
This. msg = new System. Windows. Forms. Label ();
This. button2 = new System. Windows. Forms. Button ();
This. button3 = new System. Windows. Forms. Button ();
This. label4 = new System. Windows. Forms. Label ();
This. colorDialog1 = new System. Windows. Forms. ColorDialog ();
This. button4 = new System. Windows. Forms. Button ();
This. SuspendLayout ();
//
// T_scr
//
This. t_scr.BorderStyle = System. Windows. Forms. BorderStyle. FixedSingle;
This. t_scr.Location = new System. Drawing. Point (0, 24 );
This. t_scr.Multiline = true;
This. t_scr.Name = "t_scr ";
This. t_scr.Size = new System. Drawing. Size (480, 72 );
This. t_scr.TabIndex = 0;
This. t_scr.Text = "";
//
// Label1
//
This. label1.Location = new System. Drawing. Point (8, 8 );
This. label1.Name = "label1 ";
This. label1.Size = new System. Drawing. Size (128, 16 );
This. label1.TabIndex = 1;
This. label1.Text = "enter a string of characters :";
//
// Label2
//
This. label2.Location = new System. Drawing. Point (0,104 );
This. label2.Name = "label2 ";
This. label2.Size = new System. Drawing. Size (100, 16 );
This. label2.TabIndex = 2;
This. label2.Text = "Character Parsing :";
//
// Button1
//
This. button1.FlatStyle = System. Windows. Forms. FlatStyle. Popup;
This. button1.Location = new System. Drawing. Point (144,128 );
This. button1.Name = "button1 ";
This. button1.TabIndex = 3;
This. button1.Text = "analysis ";
This. button1.Click + = new System. EventHandler (this. button#click );
//
// T_res
//
This. t_res.BorderStyle = System. Windows. Forms. BorderStyle. FixedSingle;
This. t_res.Location = new System. Drawing. Point (0,128 );
This. t_res.Multiline = true;
This. t_res.Name = "t_res ";
This. t_res.ScrollBars = System. Windows. Forms. ScrollBars. Vertical;
This. t_res.Size = new System. Drawing. Size (136,224 );
This. t_res.TabIndex = 0;
This. t_res.Text = "";
//
// Msg
//
This. msg. BorderStyle = System. Windows. Forms. BorderStyle. FixedSingle;
This. msg. ForeColor = System. Drawing. Color. Red;
This. msg. Location = new System. Drawing. Point (224,128 );
This. msg. Name = "msg ";
This. msg. Size = new System. Drawing. Size (256,224 );
This. msg. TabIndex = 4;
//
// Button2
//
This. button2.FlatStyle = System. Windows. Forms. FlatStyle. Popup;
This. button2.Location = new System. Drawing. Point (144,208 );
This. button2.Name = "button2 ";
This. button2.TabIndex = 3;
This. button2.Text = "background color ";
This. button2.Click + = new System. EventHandler (this. button2_Click );
//
// Button3
//
This. button3.FlatStyle = System. Windows. Forms. FlatStyle. Popup;
This. button3.Location = new System. Drawing. Point (144,248 );
This. button3.Name = "button3 ";
This. button3.TabIndex = 3;
This. button3.Text = "font color ";
This. button3.Click + = new System. EventHandler (this. button3_Click );
//
// Label4
//
This. label4.Location = new System. Drawing. Point (224,112 );
This. label4.Name = "label4 ";
This. label4.Size = new System. Drawing. Size (100, 16 );
This. label4.TabIndex = 5;
This. label4.Text = "analysis :";
//
// Button4
//
This. button4.FlatStyle = System. Windows. Forms. FlatStyle. Popup;
This. button4.Location = new System. Drawing. Point (144,168 );
This. button4.Name = "button4 ";
This. button4.TabIndex = 3;
This. button4.Text = "empty ";
This. button4.Click + = new System. EventHandler (this. button4_Click );
//
// Form1
//
This. AutoScaleBaseSize = new System. Drawing. Size (6, 14 );
This. ClientSize = new System. Drawing. Size (480,357 );
This. Controls. Add (this. label4 );
This. Controls. Add (this. msg );
This. Controls. Add (this. button1 );
This. Controls. Add (this. label2 );
This. Controls. Add (this. label1 );
This. Controls. Add (this. t_scr );
This. Controls. Add (this. t_res );
This. Controls. Add (this. button2 );
This. Controls. Add (this. button3 );
This. Controls. Add (this. button4 );
This. Name = "Form1 ";
This. Text = "y ";
This. ResumeLayout (false );

}
# Endregion

/// <Summary>
/// Main entry point of the application.
/// </Summary>
[STAThread]
Static void Main ()
{
Application. Run (new Form1 ());
}
// Background color
Private void button2_Click (object sender, System. EventArgs e)
{
// Enable the color control and fine-tune the color.
ColorDialog1.AllowFullOpen = true;
// Display the Help button
ColorDialog1.ShowHelp = true;
// Open the color selection box and wait for the user to select the color and then click "OK"
If (colorDialog1.ShowDialog () = DialogResult. OK)
T_res.BackColor = colorDialog1.Color;

}
// Font color
Private void button3_Click (object sender, System. EventArgs e)
{
// Do not allow users to fine-tune the color
ColorDialog1.AllowFullOpen = false;
// Display the Help button
ColorDialog1.ShowHelp = true;
// Open the color selection box and wait for the user to select the color and then click "OK"
If (colorDialog1.ShowDialog () = DialogResult. OK)
T_res.ForeColor = colorDialog1.Color;
}
// Resolution
Private void button#click (object sender, System. EventArgs e)
{
// The string cannot be blank.
If (t_scr.Text = "")
{
MessageBox. Show ("enter a string of characters! ");
Return;
}
TimeSpan t1 = new TimeSpan (DateTime. Now. Ticks );
String soruce = t_scr.Text;
Int strLen = soruce. Length;
Int realLen = 0;
String realStr = "";
For (int I = 0; I <strLen; I ++)
{
If (soruce. IndexOf (soruce [I], I) = soruce. LastIndexOf (soruce [I])
RealStr + = soruce [I];
}
RealLen = realStr. Length;
T_res.Text = string. Empty;
For (int I = 0; I <realLen; I ++)
T_res.AppendText (realStr [I] + "occurrences:" + (soruce. Split (realStr [I]). Length-1) + "\ r \ n ");
TimeSpan t2 = new TimeSpan (DateTime. Now. Ticks );
TimeSpan ts = t2.Subtract (t1). Duration ();
Msg. Text = "original String Length:" + strLen + "\ r \ n" +
"Number of non-repeated characters:" + realLen + "\ r \ n" +
"Running time:" + ts. Minutes + "Minute" + ts. Seconds + "second" + ts. Milliseconds + "millisecond ";

}
// Clear
Private void button4_Click (object sender, System. EventArgs e)
{
T_scr.Text = string. Empty;
T_res.Text = string. Empty;
Msg. Text = string. Empty;
}
}
}