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Task Overview
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This activity outputs a Collection of elements from an Input Stringsplits the InputString parameter based on the Separator parameter and builds a collection of Object items as output.
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This activity takes as Input a collection and outputs returns an element from a specified element index from the collectiongiven Input Collection.
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Activities Parameters
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Of Objects From String
This activity has two input parameters which are given by the user as IN arguments:
parameters of string type that allows string values to be inserted in the Expression Editor. The input values for the "InputString" and "Separator" parameters are given via two defined IN arguments of type string.
The two IN arguments are defined with default value in the Parameters area in WF section,Arguments tab in Task Designer panel : .
The Output output values are stored in two defined variables. Given the case, OUT arguments may be used in the same manner. If the output values are not to be passed outside the task, variables need not be defined variables :
, but instead set the "Track Outputs" property for this activity to "Yes" and the output values will be displayed in the Tracking Data without storing them in variables/OUT arguments.
When defining the variables, the default variable type is string. The "Output Collection" parameter is of type collection<Object> . To define a variable of a different type than the default ones, select the "Browse for Types.." option from the "Variable Type" column.
"Browse and Select a .Net Type" window opens. In the Search field, type "Collection" and hit "Enter". After the results are displayed, select the one of type collection<T>. Because the "Output Collection" parameter is of type collection<Object>, select from the drop down list, Object type and hit "Enter".
The "Browse and Select a .Net Type" window will close and the "Collection" defined variable will be of type Collection<Object>.
The "Count" variable should be of type "Int32" because the output parameter "Output Count" returns a value of type "Int32".
In order to display the values stored in the "Collection" variable, an iterator-type activity must be used to iterate through the elements of the collection and output the stored values. Get Element From Collection activity returns a specific element from the collection based on the "Filter Index" value. If all elements from the collection are to be displayed, a Custom ForEach activity should be used. For showcase purposes, in this task, Get Element From Collection activity is used to display the first element of the collection.
The "Count" variable value may be displayed in the Tracking Data panel using a Write Line activity or any other activity that displays values in the Tracking Data panel.
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The "Input Collection parameter from Get Element From Collection activity uses the returned Collection from Collection From String activity stored in Collection variable.
The rest of the input arguments, Filter Index and Name Indexes, are given by the user via IN arguments with default value defined in the Parameters area from WF Designer panel.
The Output values are stored in three defined variables :
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Execution Result:
" parameter is bound to the "Collection" variable which stores the "Output Collection" parameter from Collection Of Objects From String activity.The "Filter Index" parameters represents the position of the element in the collection. If the "Filter Index" parameter is used, the "Name Indexes" parameter may be ignored.
The output values are stored in three defined variables. Given the case, OUT arguments may be used in the same manner. If the output values are not to be passed outside the task, variables need not be defined, but instead set the "Track Outputs" property for this activity to "Yes" and the output values will be displayed in the Tracking Data without storing them in variables/OUT arguments.
In order to display the values stored in the "Collection Count" , "CSVString" and "Element" variables, use Write Line activity or any other activity that displays values in the Tracking Data panel.