Exists Method

Summary

Determines whether the specified class is valid.

Syntax

Objective-C

C++/CLI

Java

public bool Exists( 
   DicomUid uid 
)

- (BOOL)exists:(LTDicomUid *)uid;

public boolean exists(DicomUid uid)

public: 
bool Exists(  
   DicomUid^ uid 
)

Parameters

uid
A DicomUid class

Return Value

true if the class is valid, false if the class is not valid.

Example

using Leadtools; 
using Leadtools.Dicom; 
 
 
public void TestUIDTable() 
{ 
 
   //Make sure to initialize the DICOM engine, this needs to be done only once  
   //In the whole application 
   DicomEngine.Startup(); 
 
   //We don't need to call this since the DicomEngine.Startup already does that for us 
   //These calls are for demonstration purposes only 
   DicomUidTable.Instance.Reset(); 
   DicomUidTable.Instance.Default(); 
 
   //We can also call FindByIndex if we know the index of this UID 
   DicomUid uid = DicomUidTable.Instance.Find(DicomUidType.SCImageStorage); 
   DicomUidTable.Instance.Delete(uid); 
 
   DicomUid uid1 = DicomUidTable.Instance.Insert(DicomUidType.SCImageStorage, "Secondary Capture Image Storage", DicomUIDCategory.Class); 
   Debug.Assert(DicomUidTable.Instance.Exists(uid1) == true); 
   DicomUidTable.Instance.SetName(uid1, "Secondary Capture Image Storage 1"); 
 
   int count = 0; 
   //If we want to loop through all the UIDs in the table we can do this: 
   uid = DicomUidTable.Instance.GetFirst(); 
   while (uid != null) 
   { 
      // We can also access the rest of the properties of DicomUid in here, 
      // such as DicomUid.Code, DicomUid.Name, DicomUid.Type 
 
      if (uid.Code == DicomUidType.SCImageStorage) 
      { 
         Console.WriteLine(uid.Name); 
      } 
      count++; 
      uid = DicomUidTable.Instance.GetNext(uid); 
   } 
   //We can use GetLast and GetPrevious to achieve the same thing 
 
   Debug.Assert(count == DicomUidTable.Instance.GetCount()); 
 
   DicomEngine.Shutdown(); 
}