UpdateSpecific Method (SampleAttr)
- Last UpdatedNov 06, 2025
- 2 minute read
The UpdateSpecific() method updates selected columns of the specified sample attribute record in the Sample_Attr table.
'Declaration
Public Shared Sub UpdateSpecific( _
ByVal sessionId As Integer, _
ByVal sampleId As Integer, _
ByVal attrId As Integer, _
ByVal attrValue As DBString, _
ByVal notes As DBString, _
ByVal lastEditComment As DBString, _
ByRef lastEditAt As Nullable(Of Date) _
)
'Usage
Dim sessionId As Integer
Dim sampleId As Integer
Dim attrId As Integer
Dim attrValue As DBString
Dim notes As DBString
Dim lastEditComment As DBString
Dim lastEditAt As Nullable(Of Date)
SampleAttr.UpdateSpecific(sessionId, sampleId, attrId, attrValue, notes, lastEditComment, lastEditAt)
public static void UpdateSpecific(
int sessionId,
int sampleId,
int attrId,
DBString attrValue,
DBString notes,
DBString lastEditComment,
ref Nullable<DateTime> lastEditAt
)
Parameters
- sessionId
- Required. Holds the session ID and thus the user who is making this method call.
- sampleId
- Required. Holds the sample ID.
- attrId
- Required. Holds the attribute ID.
- attrValue
- Optional. Holds the value of the attribute.
- notes
- Optional. Holds the notes for the attribute.
- lastEditComment
- Optional. Holds comments about why this record is being changed.
- lastEditAt
Required. Holds the date/time when this record was added or last updated, for optimistic concurrency control. The passed value must match the lastEditAt value in the record for the update to succeed.
Output. Holds the date/time value when the record was updated by this called method.
Observe the following input parameter rules:
- Optional non-DB* parameters: Either enter a value or pass a null. If passing a null and a default value has been defined, the default value will be used for the parameter.
- Optional DB* parameters: To enter no value for the parameter, pass DB*.null (e.g., DBInt.null). To use the default value for the parameter if one has been defined for the object being added, pass a null.
The attribute value or the notes can be set to null in the database by passing DBString.Null for the attrValue or notes parameters respectively. But at least one of these field must have a non-null value. [[Reviewers: I added this statement that was in other xxxAttr UpdateSpecific methods. True for this method?]]