Archive for February, 2007

Simple RegEx replace in C#

Thursday, February 1st, 2007

As I don’t use regular expressions that often I always forget the syntax. So I thought I just put a basic replace pattern up here.

This method takes a schema, finds all places where is says schemaLocation=”whatever” in a text and changes this to schemaLocation=”whatever.xsd“ and then returns the schema.

private XmlSchema FixSchemaLocation(XmlSchema schema)
{
  System.Text.RegularExpressions.Regex locationReplacePattern = new System.Text.RegularExpressions.Regex("schemaLocation=\"(?<location>.*?)\"");
  string locationReplaceValue = "schemaLocation=\"${location}.xsd\"";
  //Puts .xsd after the schemaLocation. We need this find the imported schemas
  StringWriter sw = new StringWriter();
  schema.Write(sw);
  XmlSchema formatedSchema = XmlSchema.Read(new StringReader(locationReplacePattern.Replace(sw.ToString(), locationReplaceValue)),null);
  return formatedSchema;
}

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