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Text.SelectStr(Integer, Text) Method

  • Artikkeli

Version: Available or changed with runtime version 1.0.

Retrieves a substring from a comma-separated string.

Syntax

NewString :=   Text.SelectStr(Number: Integer, CommaString: Text)

Note

This method can be invoked without specifying the data type name.

Parameters

Number
 Type: Integer
Specifies which substring to retrieve. The substrings in the comma-separated string are numbered 1, 2, 3, and so on. If Number is greater than the actual number of substrings, then a run-time error occurs.

CommaString
 Type: Text
A string that contains substrings separated by commas. The maximum length of this string is 391 characters.

Return Value

NewString
 Type: Text
The substring from the comma-separated string at the index specified.

Remarks

SelectStr treats string values as OPTIONS. This means that identical values in different strings are not allowed.

Any trailing commas are removed before the operation starts.

If Number is less than 1 or greater than the number of real values (excluding trailing commas) in the string, then an error is returned.

Quotes are not supported. For example, a,b,"c,d",e is treated as a five-element substring where substring 4 is d".

Example 1

var
    CommaStr: Text[60];  
    CommaStr2: Text[60];  
    SubStr1: Text[60];  
    SubStr2: Text[60];  
    SubStr3: Text[60];  
    SubStr4: Text[60];  
    Text000: Label 'This,is a comma,separated,string';
    Text001: Label 'The calls to SelectStr return:\\';
    Text002: Label '11,22,33,,55,,,';
begin
    CommaStr := Text000;  
    CommaStr2 := Text002;  
    SubStr1 := SelectStr(2, CommaStr); // Pick out the 2nd substring.  
    SubStr2 := SelectStr(4, CommaStr); // Pick out the 4th substring.  
    SubStr3 := SelectStr(1, CommaStr2);  
    SubStr4 := SelectStr(3, CommaStr2);  
    Message(Text001 + '>%1<\' + '>%2<\' + '>%3<\' + '>%4<\', SubStr1, SubStr2, SubStr3, SubStr4);  
end;

The message window displays the following text:

The calls to SelectStr return:

>is a comma<

>string<

>11<

>33<

Example 2

var
    CommaStr2: Text[60];  
    SubStr5: Text[60];  
    Text002: Label '11,22,33,,55,,,';
begin
    CommaStr2 := Text002;  
    SubStr5 := SelectStr(6,CommaStr2);  
    Message('>%1<\', SubStr5);  
end;

This example returns an error.

Text Data Type
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