C # File Splitter

The two-level copy command is used in the combination. Can be combined with a number of files, in fact, the total length of the test command line can theoretically achieve a combination of infinite split file, but the practical value is not high, millions more than a single document This single-threaded method appears inefficient, and should use more excellent algorithm for segmentation and combination.

This procedure can only be categorized as "toys".

Using System;
Using System.Drawing;
Using System.Collections;
Using System.ComponentModel;
Using System.Windows.Forms;
Using System.Data;

Namespace Filesplit
{
<summary>
Summary description of the Form1.
</summary>
public class Form1:System.Windows.Forms.Form
{
Private System.Windows.Forms.TextBox TextBox1;
Private System.Windows.Forms.TextBox TextBox2;
Private System.Windows.Forms.Button button1;
Private System.Windows.Forms.Button button2;
Private System.Windows.Forms.OpenFileDialog OFD;
Private System.Windows.Forms.Label Label1;
Private System.Windows.Forms.Label Label2;
<summary>
The required designer variable.
</summary>
Private System.ComponentModel.Container components = null;

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

//
TODO: Add any constructor code after the InitializeComponent call
//
}

<summary>
Clean up all resources that are in use.
</summary>
protected override void Dispose (bool disposing)
{
if (disposing)
{
if (Components!= null)
{
Components. Dispose ();
}
}
Base. Dispose (disposing);
}

Code generated #region the Windows forms Designer
<summary>
Designer supports required methods-do not use the Code editor to modify
The contents of this method.
</summary>
private void InitializeComponent ()
{
This.textbox1 = new System.Windows.Forms.TextBox ();
This.textbox2 = new System.Windows.Forms.TextBox ();
This.button1 = new System.Windows.Forms.Button ();
This.button2 = new System.Windows.Forms.Button ();
THIS.OFD = new System.Windows.Forms.OpenFileDialog ();
This.label1 = new System.Windows.Forms.Label ();
This.label2 = new System.Windows.Forms.Label ();
This. SuspendLayout ();
//
TextBox1
//
This.textBox1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
This.textBox1.Location = new System.Drawing.Point (16, 16);
This.textBox1.Name = "TextBox1";
This.textBox1.ReadOnly = true;
This.textBox1.Size = new System.Drawing.Size (376, 21);
This.textBox1.TabIndex = 0;
This.textBox1.Text = "File Path";
//
TextBox2
//
This.textBox2.Location = new System.Drawing.Point (56, 48);
This.textBox2.Name = "TextBox2";
This.textBox2.Size = new System.Drawing.Size (72, 21);
This.textBox2.TabIndex = 1;
This.textBox2.Text = "";
//
Button1
//
This.button1.FlatStyle = System.Windows.Forms.FlatStyle.System;
This.button1.Location = new System.Drawing.Point (200, 48);
This.button1.Name = "Button1";
This.button1.Size = new System.Drawing.Size (272, 24);
This.button1.TabIndex = 2;
This.button1.Text = "Split";
This.button1.Click + = new System.EventHandler (This.button1_click);
//
Button2
//
This.button2.FlatStyle = System.Windows.Forms.FlatStyle.System;
This.button2.Location = new System.Drawing.Point (400, 16);
This.button2.Name = "Button2";
This.button2.Size = new System.Drawing.Size (72, 24);
This.button2.TabIndex = 3;
This.button2.Text = "browsing";
This.button2.Click + = new System.EventHandler (This.button2_click);
//
Label1
//
This.label1.Location = new System.Drawing.Point (16, 48);
This.label1.Name = "Label1";
This.label1.Size = new System.Drawing.Size (32, 23);
This.label1.TabIndex = 4;
This.label1.Text = "Size";
//
Label2
//
This.label2.Location = new System.Drawing.Point (136, 48);
This.label2.Name = "Label2";
This.label2.Size = new System.Drawing.Size (56, 16);
This.label2.TabIndex = 5;
This.label2.Text = "KB";
//
Form1
//
This. AutoScaleBaseSize = new System.Drawing.Size (6, 14);
This. ClientSize = new System.Drawing.Size (498, 79);
This. Controls.Add (THIS.LABEL2);
This. Controls.Add (THIS.LABEL1);
This. Controls.Add (This.button2);
This. Controls.Add (This.button1);
This. Controls.Add (THIS.TEXTBOX2);
This. Controls.Add (This.textbox1);
This. FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
This. MaximizeBox = false;
This. MinimizeBox = false;
This. Name = "Form1";
This. Text = "Spliter";
This. ResumeLayout (FALSE);

}
#endregion

<summary>
The main entry point for the application.
</summary>
[STAThread]
static void Main ()
{
Application.Run (New Form1 ());
}


private void Button2_Click (object sender, System.EventArgs e)
{
if (This.ofd.ShowDialog ()!=system.windows.forms.dialogresult.ok) {return;}
This.textbox1.text=ofd. FileName;
}

private void Button1_Click (object sender, System.EventArgs e)
{


Try
{

int i=1;
Try
{
I=int. Parse (This.textBox2.Text);
if (I <= 0) {System.Exception ee = new Exception (); throw EE;}
i*=1000;
}
Catch
{
i=0;
System.Windows.Forms.MessageBox.Show ("Input split number is incorrect");
Return
}

#region "Assign Folder"
int count=1;
String WORKPATH=OFD. Filename.tostring () + "Split";
while (true)
{

if (! System.IO.Directory.Exists (Workpath)) {break;}
Else
{
if (! System.IO.Directory.Exists (workpath+ "_" +count. ToString ()))
{
workpath+= "_" +count. ToString ();
Break
}
Else
{
count++;
}

}
}
System.IO.Directory.CreateDirectory (Workpath);
#endregion


System.IO.FileStream f=new System.IO.FileStream (ofd. Filename,system.io.filemode.open);

System.IO.BinaryReader r = new System.IO.BinaryReader (f);

Long L=f.length;long x=0;
int filecount=1;


for (;x<l;)
{
System.IO.FileStream f2=new System.IO.FileStream (workpath+ "\" +filecount.) ToString (), System.IO.FileMode.CreateNew);
for (int for1=0;for1<i;for1++)
{
if (x<l)
{
F2. WriteByte (R.readbyte ());

}
x + +;
}
F2. Close ();
filecount++;
}
F.close ();

System.IO.StreamWriter T =new System.IO.StreamWriter (System.IO.File.Open (workpath+ "\" + "Combo file. Bat", System.IO.FileMode.Create), System.Text.Encoding.Default);

T.writeline ("@echo off");
T.write ("copy");

int tempcount = 0;



for (int for2=1;for2<filecount;for2++)
{
T.write (For2. ToString () + "/b");
if (For2+1!=filecount)
{
if ((for2% 100) = = 0)
{
T.write ("" + "temp" + ((int) (tempcount++)). ToString ());
T.writeline ();
T.write ("copy");
}
Else
{
T.write ("+");
}
}
else{
T.write ("" + "temp" + ((int) (tempcount++)). ToString ());
T.writeline ();
}

}

T.write ("copy");
for (int for2 = 0; For2 < tempcount; for2++)
{
T.write ("temp" + For2). ToString () + "/b");
if (For2 + 1!= tempcount && tempcount!=0)
{
T.write ("+");
}

else{
T.write ("" +getfilename) (OFD. FileName));
T.writeline ();
}


}




for (int for2 = 0; For2 < tempcount; for2++)
{
T.writeline ("del" + "temp" + For2). ToString ());
}

for (int for2=1;for2<filecount;for2++)
{
T.writeline ("del" +for2);
}




T.close ();
Filecount-=1;

System.Windows.Forms.MessageBox.Show ("Split file creation has been completed and split into" +filecount.) ToString () + "part");
}
catch (System.Exception ee)
{
System.Windows.Forms.MessageBox.Show ("Operation error, did not complete split:" +ee. message);
Gc. Collect ();
}
}




private string GetFileName (String str)
{
int firstname=0;
String result= "";
for (int i=str. length-1;i>=0;i--)
{
if (str[i]== ' \ ")
{
Firstname=i;
Break
}
}
for (int i=firstname+1;i<str. length;i++)
{
Result+=str[i];

}
return result;
}



}
}