Extract Method (ExtractionCursor, String, String, String)

Response Extract Method (ExtractionCursor, String, String, String)

C# API

Extracts text from the response content - everything between (but not including) the specified before and after string objects - returning the defaultValue if they cannot be found.

Namespace: Facilita.Web
Assembly: clrWebBrowser (in clrWebBrowser.dll) Version: 9.5.7.98 (1.0.0.0)

Syntax

C++

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public string Extract(
	ExtractionCursor cursor,
	string before,
	string after,
	string defaultValue
)

public string Extract(
	ExtractionCursor cursor,
	string before,
	string after,
	string defaultValue
)

Parameters

cursor: Type: Facilita.Native ExtractionCursor
An ExtractionCursor object to store the success/failure of the action, and the index in the response at which the match was found.

before: Type: System String
This text is searched for in the response content, and the returned string starts immediately after this text occurs in the content.

after: Type: System String
This text is searched for in the response content after the before text has been found, and the returned string ends immediately before this text occurs in the content.

defaultValue: Type: System String
The value to return if either the before or after text cannot be found.

Return Value

The extracted text, or defaultValue if the extract failed.

Remarks

Information about the success/failure of this method will be stored in the ExtractionCursor object passed.

Note
The search is case-sensitive.

Examples

The following example demonstrates extracting text from a HTML Response.

C++

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Response response = request.Send();
ExtractionCursor cursor = new ExtractionCursor();

// extract the value from the HTML text, defaulting to "Joe Jones" if the value cannot be found 
// <input type="text" name="f_customer" size="32" maxlength="32" value="Joe Smith"> 
string extractedText = response.Extract(
                        cursor,
                        "value=\"",
                        "\"",
                        "Joe Jones");

if (cursor.Succeeded)
{
    WriteMessage(string.Format("The value {0} was found at position {1}", extractedText, cursor.Index));
}

Response response = request.Send();
ExtractionCursor cursor = new ExtractionCursor();

// extract the value from the HTML text, defaulting to "Joe Jones" if the value cannot be found 
// <input type="text" name="f_customer" size="32" maxlength="32" value="Joe Smith"> 
string extractedText = response.Extract(
                        cursor,
                        "value=\"",
                        "\"",
                        "Joe Jones");

if (cursor.Succeeded)
{
    WriteMessage(string.Format("The value {0} was found at position {1}", extractedText, cursor.Index));
}