Skip to main content

Edit menu bar with cut copy and paste operations in Windows Form C#


In this article i will show you how to do cut copy and paste operation on text which is entered in the TextBox. I will give you an example of it. It is impossible for one, specially a Programmer, to imagine his/her life without editing. Editing operations (Cut/Copy and paste etc.) are performed using clipboard, so these are also called Clipboard operation.


Larry Tesler, who invented Cut/Copy and paste in 1973. He is a computer scientist, working in the field of human-computer interaction. Tesler has worked at Xerox PARC, Apple Computer, and Yahoo! We can find out more about LarryTesler.

In this article I will show how to perform these operations with our own code. As we are just doing editing operations, it doesn't matter which control we are using. Here I am using two textboxes to perform this operation. I created a simple window form with a menu strip and two textboxes. In the menu strip all the operations are added in Edit menu item as shown in below screenshot.

Generate the click event of above three menu items. 

We are going to copy the selected text of textbox, so we use SelectedText property of textbox. To copy the data in clipboard there is a method in Clipboard class i.e. SetData(), which will clear the clipboard and then add new data in specified format to clipboard.

private void copyToolStripMenuItem_Click(object sender, EventArgs e)
      TextBox txtBox = this.ActiveControl as TextBox;
      if (txtBox.SelectedText != string.Empty)
         Clipboard.SetData(DataFormats.Text, txtBox.SelectedText);

Actually, cut operation is a combination of copying and removing that text from that location. So we will copy the text and empty that string after that.

private void cutToolStripMenuItem_Click(object sender, EventArgs e)
    TextBox txtBox = this.ActiveControl as TextBox;
    if (txtBox.SelectedText != string.Empty)
       Clipboard.SetData(DataFormats.Text, txtBox.SelectedText);
    txtBox.SelectedText = string.Empty;

To insert clipboard data to current location is called paste. We can perform a paste operation multiple times with a single clipboard data. To paste the data from clipboard there is a method in Clipboard class i.e. GetText(). First we get actual position of cursor in the textbox and then insert the data to that position using Insert() method as in above code.

private void pasteToolStripMenuItem_Click(object sender, EventArgs e)
    int position = ((TextBox)this.ActiveControl).SelectionStart;
    this.ActiveControl.Text = this.ActiveControl.Text.Insert(position, Clipboard.GetText());

Insert() is a method of string class, which return a string in which a specified string is inserted at a specified position. So that is how we perform editing operations with our own code. The same procedure can be used to perform these operation in other controls of windows forms.

Download source.


Popular posts from this blog

difference between structure and union in C Language

In c language article we will see the difference between union and structure. Both are the user define datatype in c language. See the table which is mentioned below: ASP.NET Video Tutorial Series Structure Union1.The keywordstruct is used to define a structure 1. The keyword union is used to define a union. 2. When a variable is associated with a structure, the compiler allocates the memory for each member. The size of structure is greater than or equal to the sum ofsizes of its members. The smaller members may end with unused slack bytes. 2. When a variable is associated with a union, thecompiler allocates thememory by considering the size of the largest memory. So, size of union is equal to the size of largest member. 3. Each member within a structure is assigned unique storage area of location. 3. Memory allocated is shared by individual members of union. 4. The address of each member will be in ascending order This indicates that memory for each member will start at different offset v…

Difference between Linear search and Binary Search in c language

SQL Video Channel : Download all SQL Video

Binary Search Linear Search Works only on sorted items. such as  1,2,3,4,5,6  etc
Works on sorted as well as unsorted items. 12,4,5,3,2,1 etc Very efficient if the items are sorted Very efficient if the items are less and present in the beginning of the list. such as Suppose your list items are : 12,3,4,5,1 and you want to search 12 number then you get beginning in the list. Works well with arrays and not on linked lists. Works with arrays and linked lists.
Number of comparisons are less More number of comparisons are required if the items are present in the later part of the array or its elements are more.

Memory representation of Linked List Data Structures in C Language

Memory representation of Linked List

             In memory the linked list is stored in scattered cells (locations).The memory for each node is allocated dynamically means as and when required. So the Linked List can increase as per the user wish and the size is not fixed, it can vary.

               Suppose first node of linked list is allocated with an address 1008. Its graphical representation looks like the figure shown below:

      Suppose next node is allocated at an address 506, so the list becomes,

  Suppose next node is allocated with an address with an address 10,s the list become,

The other way to represent the linked list is as shown below:

 In the above representation the data stored in the linked list is “INDIA”, the information part of each node contains one character. The external pointer root points to first node’s address 1005. The link part of the node containing information I contains 1007, the address of next node. The last node …