New to Telerik Document Processing? Start a free 30-day trial

Mid

Class

Extracts a substring from text at a specified position and length; implements the MID text function.

Definition

Namespace:Telerik.Documents.Spreadsheet.Expressions.Functions

Assembly:Telerik.Windows.Documents.Spreadsheet.dll

Syntax:

public class Mid : FunctionWithArguments

Inheritance: objectFunctionBaseFunctionWithArgumentsMid

Inherited Members FunctionWithArguments.EvaluateOverride(FunctionEvaluationContext<RadExpression>)FunctionWithArguments.EvaluateLiftedElement(FunctionEvaluationContext<RadExpression>, RadExpression[], int, int)FunctionBase.IsSpillingArgument(int, RadExpression)FunctionBase.Evaluate(FunctionEvaluationContext<RadExpression>)FunctionBase.IsArgumentNumberValid(int)FunctionBase.ArgumentConversionRules...

Constructors

Mid()

Initializes a new instance that extracts characters from the middle of a text string.

public Mid()

Fields

FunctionName

string

The name of the function.

public static readonly string FunctionName

Properties

FunctionInfo

Gets metadata about the function including its arguments and category.

public override FunctionInfo FunctionInfo { get; }

Property Value:

The function info as FunctionInfo.

Overrides: FunctionBase.FunctionInfo

When true, FunctionBase automatically evaluates this function element-wise over any multi-element array argument and returns a spilled array result. Override to true in pure scalar functions (e.g. ABS, LEN, MOD) where applying the function independently to each element of an input array is the correct dynamic-array behavior. Leave false (the default) for reducers.

public override bool LiftsOverArrays { get; }

Overrides: FunctionBase.LiftsOverArrays

Name

string

Gets the function name used in formulas.

public override string Name { get; }

Property Value:

The name as String.

Overrides: FunctionBase.Name

Methods

EvaluateOverride(FunctionEvaluationContext<object>)

Evaluates the MID function with the provided arguments and returns the extracted substring.

protected override RadExpression EvaluateOverride(FunctionEvaluationContext<object> context)

Parameters:contextFunctionEvaluationContext<object>Returns:

RadExpression

Functions result as RadExpression.

Overrides: FunctionWithArguments.EvaluateOverride(FunctionEvaluationContext<object>)