Class StringHelper

Provides helper functions for working with strings.

Inheritance

System.Object

StringHelper

Inherited Members

System.Object.ToString()

System.Object.Equals(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

Namespace: Nevatech.Vsb.Repository

Assembly: Nevatech.Vsb.Repository.dll

Syntax

public static class StringHelper

Methods

GetTagSize(Int32, String, Boolean)

Returns approximate size of XML tag containing a string value. Assumption is that UTF-8 encoding and English language are used.

Declaration

public static int GetTagSize(int tagNameLength, string tagValue, bool emitDefaultValue)

Parameters

Type	Name	Description
System.Int32	tagNameLength	Length of the tag name.
System.String	tagValue	Tag value.
System.Boolean	emitDefaultValue	Indicates that default (nil) value needs to be emitted, if tag value is Null.

Returns

Type	Description
System.Int32	Approximate size of the tag.

Remarks

Generally tag size with value is tag name length multiplied by two plus 5 plus value size. Tag size without value is tag name plus 3. If that value is nullable and should be emitted then 13 needs to be added.

GetTagSize(Int32, String, Boolean, Boolean)

Returns approximate size of XML tag containing a string value. Assumption is that UTF-8 encoding and English language are used.

Declaration

public static int GetTagSize(int tagNameLength, string tagValue, bool emitDefaultValue, bool applyXmlEncoding)

Parameters

Type	Name	Description
System.Int32	tagNameLength	Length of the tag name.
System.String	tagValue	Tag value.
System.Boolean	emitDefaultValue	Indicates that default (nil) value needs to be emitted, if tag value is Null.
System.Boolean	applyXmlEncoding	Indicated that string will be XML-endoded (like > symbol will be replaced with ">" characters), so its length must be adjusted for that.

Returns

Type	Description
System.Int32	Approximate size of the tag.

Remarks

Generally tag size with value is tag name length multiplied by two plus 5 plus value size. Tag size without value is tag name plus 3. If that value is nullable and should be emitted then 13 needs to be added.

GetTagSize<T>(Int32, T, Boolean)

Returns approximate size of XML tag containing a value-typed value. Assumption is that UTF-8 encoding and English language are used.

Declaration

public static int GetTagSize<T>(int tagNameLength, T tagValue, bool emitDefaultValue)
    where T : struct, IComparable

Parameters

Type	Name	Description
System.Int32	tagNameLength	Length of the tag name.
T	tagValue	Tag value.
System.Boolean	emitDefaultValue	Indicates that default value needs to be emitted.

Returns

Type	Description
System.Int32	Approximate size of the tag.

Type Parameters

Name	Description
T	Type of the tag value.

GetTagSize<T>(Int32, Nullable<T>, Boolean)

Returns approximate size of XML tag containing a nullable value-typed value. Assumption is that UTF-8 encoding and English language are used.

Declaration

public static int GetTagSize<T>(int tagNameLength, T? tagValue, bool emitDefaultValue)
    where T : struct, IComparable

Parameters

Type	Name	Description
System.Int32	tagNameLength	Length of the tag name.
System.Nullable<T>	tagValue	Nullable tag value.
System.Boolean	emitDefaultValue	Indicates that default value needs to be emitted.

Returns

Type	Description
System.Int32	Approximate size of the tag.

Type Parameters

Name	Description
T	Type of the tag value.

IndexOfAny(String, String[], StringComparison)

Reports the zero-based index of the first occurrence of any of the specified strings in this instance.

Declaration

public static int IndexOfAny(this string value, string[] values, StringComparison comparison)

Parameters

Type	Name	Description
System.String	value	The string to be searched.
System.String[]	values	The strings to seek.
System.StringComparison	comparison	One of the enumeration values that specifies the rules for the search.

Returns

Type	Description
System.Int32	The zero-based index position of value if that string is found, or -1 if it is not.

IsEmail(String)

Checks if provided string represents a valid e-mail address.

Declaration

public static bool IsEmail(this string value)

Parameters

Type	Name	Description
System.String	value	String to be examined.

Returns

Type	Description
System.Boolean	True, if provided string is not empty and represents a valid e-mail address. False, otherwise.

NormalizeNewLines(String)

Replaces all single new line characters (\n) with pairs of carriage return + new line characters (\r\n).

Declaration

public static string NormalizeNewLines(this string value)

Parameters

Type	Name	Description
System.String	value	A string that needs to be normalized.

Returns

Type	Description
System.String	A normalized string.

Replace(String, IEnumerable<Token>)

Returns a new string in which all occurrences of a specified tokens are replaced with their values.

Declaration

public static string Replace(this string source, IEnumerable<Token> values)

Parameters

Type	Name	Description
System.String	source	A string where replacements must occur.
System.Collections.Generic.IEnumerable<Token>	values	Collection of tokens containing old and new values to be used for string replacement.

Returns

Type	Description
System.String	New string in which all occurrences of a specified tokens are replaced with their values.

Replace(String, String, String, StringComparison)

Returns a new string in which all occurrences of a specified string in the provided source string are replaced with another specified string.

Declaration

public static string Replace(this string source, string oldValue, string newValue, StringComparison comparisonType)

Parameters

Type	Name	Description
System.String	source	A string where replacements must occur.
System.String	oldValue	A string to be replaced.
System.String	newValue	A string to replace all occurrences of old value.
System.StringComparison	comparisonType	Specifies the rules of string comparison.

Returns

Type	Description
System.String	New string in which all occurrences of a specified string in the provided source string are replaced with another specified string.

ToString(DateTime)

Converts System.DateTime value into string value.

Declaration

public static string ToString(DateTime value)

Parameters

Type	Name	Description
System.DateTime	value	Date and time value to be converted.

Returns

Type	Description
System.String	String value that represents serialized System.DateTime value.

ToStringAsync(HttpRequestMessage, Boolean)

Writes HTTP request message to a string that can be used for logging purposes.

Declaration

public static Task<string> ToStringAsync(this HttpRequestMessage message, bool appendNewLines = false)

Parameters

Type	Name	Description
System.Net.Http.HttpRequestMessage	message	HTTP request message to be logged.
System.Boolean	appendNewLines	Optional flag indicating that empty lines must be added in the beginning and at the end of the result string.

Returns

Type	Description
System.Threading.Tasks.Task<System.String>	String containing the provided HTTP request message.

ToStringAsync(HttpResponseMessage, Boolean)

Writes HTTP response message to a string that can be used for logging purposes.

Declaration

public static Task<string> ToStringAsync(this HttpResponseMessage message, bool appendNewLines = false)

Parameters

Type	Name	Description
System.Net.Http.HttpResponseMessage	message	HTTP response message to be logged.
System.Boolean	appendNewLines	Optional flag indicating that empty lines must be added in the beginning and at the end of the result string.

Returns

Type	Description
System.Threading.Tasks.Task<System.String>	String containing the provided HTTP response message.

Truncate(String, Int32, String)

Truncates provided string up to specified number of characters.

Declaration

public static string Truncate(this string value, int count, string replacementSuffix)

Parameters

Type	Name	Description
System.String	value	String that needs to be truncated.
System.Int32	count	Maximum number of characters in the string.
System.String	replacementSuffix	String to append to the truncated string to indicate that truncation happened.

Returns

Type	Description
System.String	Provided string truncated up to specified number of characters.