Convert a string to Uppercase
String Sub_Code = txtcode.Text.ToUpper();
Convert a string to Lowercase
String Sub_Code = txtcode.Text.ToLower();
Note : ToLower and ToUpper are methods of string class.
Convert a string to ProperCase or TitleCase
The String class does not include any method that converts a string to title case. To convert a string to title case we use ToTitleCase method which resides in the TextInfo class, which is a member of the System.Globalization namespace. Unlike the ToUpper and ToLower methods of the String class, the ToTitleCase method is not a static method and requires an instance of the class.
When we use the TextInfo class, we must specify cultural information. CultureInfo class represents information about a specific culture including the names of the culture, the writing system, and the calendar used, as well as access to culture-specific objects that provide information for common operations, such as formatting dates and sorting strings.
When we use the TextInfo class, we must specify cultural information. CultureInfo class represents information about a specific culture including the names of the culture, the writing system, and the calendar used, as well as access to culture-specific objects that provide information for common operations, such as formatting dates and sorting strings.
Example :
CultureInfo cultureinfo = CultureInfo.InvariantCulture;
TextInfo textinfo = cultureinfo.TextInfo;
string Sub_Name =textinfo.ToTitleCase(txtname.Text);