FieldExpression Class

Name of the database field represented by this instance.

Prism:   property FieldName: String read write
C#:   String FieldName { get; set; }
VB:   Property FieldName As String

The kind of WhereExpression. For this class, it equals WhereKind.Field.

Prism:   property Kind: WhereKind read
C#:   WhereKind Kind { get; }
VB:   Property ReadOnly Kind As WhereKind

Prism:   property TableName: String read write
C#:   String TableName { get; set; }
VB:   Property TableName As String

Creates a new instance of the FieldExpression class. Note that you have to set at least the FieldName property to be able to use this instance in Dynamic Where expressions.

Prism:   constructor
C#:   constructor()
VB:   Sub New

Creates a new instance of the FieldExpression class and sets its FieldName property.

Prism:   constructor(aFieldName: String)
C#:   constructor(String aFieldName)
VB:   Sub New (aFieldName As String)

Parameters:

• aFieldName: Name of the database field represented by this instance

Prism:   constructor(aTableName: String; aFieldName: String)
C#:   constructor(String aTableName, String aFieldName)
VB:   Sub New (aTableName As String, aFieldName As String)

Parameters:

• aTableName:
• aFieldName:

Deserializes the field expression from the provided XmlNode. The node value (its InnerText) is assigned to the FieldName property. If the node contains the attribute tablename, its value is assigned to the TableName property.

Prism:   method ReadFromXml(xr: XmlNode)
C#:   void ReadFromXml(XmlNode xr)
VB:   Sub ReadFromXml(xr As XmlNode)

Parameters:

• xr: XmlNode containing the serialized FieldExpression instance

Creates an SQL representation of this FieldExpression instance and appends it to the provided StringBuilder.

For example, this method call

(new FieldExpression("ClassName")).ToSQLString(someStringBuilder)

will result in appending the string "ClassName" to someStringBuilder.

Prism:   method ToSQLString(dest: StringBuilder)
C#:   void ToSQLString(StringBuilder dest)
VB:   Sub ToSQLString(dest As StringBuilder)

Parameters:

• dest: StringBuilder instance to which the SQL representation of this instance will be appended.

Serializes this FieldExpression instance into an XmlElement and appends it as a child to the provided XmlNode.

While the serialized FieldName property is saved as text node, the TableName property (if assigned) is saved as attribute tablename of this XmlNode.

Prism:   method WriteToXml(sw: XmlNode)
C#:   void WriteToXml(XmlNode sw)
VB:   Sub WriteToXml(sw As XmlNode)

Parameters:

• sw: XmlNode to which the serialization result will be appended.