String functions in c# windows application

Lewis Cook Lewis Cook 11 1 1 silver badge 5 5 bronze badges. You should be able to pull the value from your textbox on the button click event. What have you tried so far? Lewis Find my answer i have put the links where whole solutions is there — Hitesh Anshani. Add a comment. Active Oldest Votes. Improve this answer. Hitesh Anshani Hitesh Anshani 1, 7 7 silver badges 19 19 bronze badges.

Thanks for your help, my tutor said that I was making things too complicated for myself and only needed to create a simple program, so I used the data set and linked the textboxes to that so that all information is displayed instead of searching and certain information being shown.

Thanks anyway!! Bruno Ryckaert Bruno Ryckaert 1 1 silver badge 6 6 bronze badges. IsNullOrEmpty tfSearch. GetValue 0. GetValue 1. GetValue 2. GetValue 3. ToString ; if name. StartsWith tfSearch. Add ; dataGridView1. Maker Maker 1 1 silver badge 10 10 bronze badges. In this article I will describe how to split and merge string value in windows form application in c.

In this article I explain one of the most important things often used in projects; splitting and merging strings. Splitting a string means making multiple substrings from one single string as determined by a specific separator value. In this article I will split on a space " " if a space occurs in the string it will break. And after the string break I display two TextBoxes. Open a Windows Forms application and insert two buttons and four TextBoxes, each with the multiline property set to true.

InitializeComponent ;. Split ' ' ;. Step 3. Now run your application and enter a string in textbox1 for the split. GetBytes strOriginal. Convert Byte[] to String — The Encoding. GetString decodes a sequence of bytes into a string.

GetString b ;. GetString b. ToCharArray which copies the characters in the string to a Unicode character array. ToCharArray ;. Convert a Char[] to String — A convenient way to convert a character array to string is to use the String constructor which accepts a character array.

Test if String is null or Zero Length — A simple way to test if a string is null or empty is to use the String. IsNullOrEmpty string which returns a Boolean value. IsNullOrEmpty strOriginal ;. IsNullOrEmpty strOriginal. Create a String of characters accepted from user -. Convert the Case of a String — The String class contains methods to convert a string to lower and upper cases. Show textInfo. ToLower strOriginal ;. ToUpper strOriginal ;. ToTitleCase strOriginal ;.

Dim cultureInfo As System. Dim textInfo As System. ToLower strOriginal. ToUpper strOriginal. ToTitleCase strOriginal. Count the occurrences of words in a String — You can adopt multiple ways to find the occurrence of a word in a string.

One of them is to use the String. IndexOf which is one of the ways of finding the occurrence of the word. In VB. NET, use String. Matches collection. However this method is slow. We will explore both these methods in the sample. Regex srchString ;. Matches strOriginal. Dim rex As System. Regex srchString.

Insert Characters inside a String — The String. Insert inserts text at a specified index location of a string. You can insert either a character or a string at a given index location. Insert 26, "very " ;. Insert 26, "very ". Replace characters in a String — The String. Replace removes characters from a string and replaces them with a new character or string.

Replace "come handy" , "be useful" ;. Replace "come handy", "be useful". So those were 15 common string operations that we saw in this article.

In the next article, we will explore some more string operations that are used commonly in projects. I hope this article was useful and I thank you for viewing it. Was this article worth reading? Share it with fellow developers too. Feedback - Leave us some adulation, criticism and everything in between! Comment posted by David on Monday, August 18, PM In the examples for counting words using Regix, the MessageBox is using cnt, not count as the number of words.

That was a typo that missed my editor's as well as my eyes!!