DbColumn Class

Definition

Namespace:

System.Data.Common

Assembly:

System.Data.Common.dll

Source:

DbColumn.cs

Represents a column within a data source.

public ref class DbColumn abstract

public abstract class DbColumn

type DbColumn = class

Public MustInherit Class DbColumn

Inheritance

Object

DbColumn

Constructors

DbColumn()

Initializes a new instance of the DbColumn class.

Properties

AllowDBNull	Gets a nullable boolean value that indicates whether DBNull values are allowed in this column, or returns null if no value is set. Can be set to either true or false indicating whether DBNull values are allowed in this column, or null (Nothing in Visual Basic) when overridden in a derived class.
BaseCatalogName	Gets the catalog name associated with the data source; otherwise, null if no value is set. Can be set to either the catalog name or null when overridden in a derived class.
BaseColumnName	Gets the base column name; otherwise, null if no value is set. Can be set to either the column name or null when overridden in a derived class.
BaseSchemaName	Gets the schema name associated with the data source; otherwise, null if no value is set. Can be set to either the schema name or null when overridden in a derived class.
BaseServerName	Gets the server name associated with the column; otherwise, null if no value is set. Can be set to either the server name or null when overridden in a derived class.
BaseTableName	Gets the table name in the schema; otherwise, null if no value is set. Can be set to either the table name or null when overridden in a derived class.
ColumnName	Gets the name of the column. Can be set to the column name when overridden in a derived class.
ColumnOrdinal	Gets the column position (ordinal) in the datasource row; otherwise, null if no value is set. Can be set to either an int32 value to specify the column position or null when overridden in a derived class.
ColumnSize	Gets the column size; otherwise, null if no value is set. Can be set to either an int32 value to specify the column size or null when overridden in a derived class.
DataType	Gets the type of data stored in the column. Can be set to a Type object that represents the type of data in the column when overridden in a derived class.
DataTypeName	Gets the name of the data type; otherwise, null if no value is set. Can be set to either the data type name or null when overridden in a derived class.
IsAliased	Gets a nullable boolean value that indicates whether this column is aliased, or returns null if no value is set. Can be set to either true or false indicating whether this column is aliased, or null (Nothing in Visual Basic) when overridden in a derived class.
IsAutoIncrement	Gets a nullable boolean value that indicates whether values in this column are automatically incremented, or returns null if no value is set. Can be set to either true or false indicating whether values in this column are automatically incremented, or null (Nothing in Visual Basic) when overridden in a derived class.
IsExpression	Gets a nullable boolean value that indicates whether this column is an expression, or returns null if no value is set. Can be set to either true or false indicating whether this column is an expression, or null (Nothing in Visual Basic) when overridden in a derived class.
IsHidden	Gets a nullable boolean value that indicates whether this column is hidden, or returns null if no value is set. Can be set to either true or false indicating whether this column is hidden, or null (Nothing in Visual Basic) when overridden in a derived class.
IsIdentity	Gets a nullable boolean value that indicates whether this column is an identity, or returns null if no value is set. Can be set to either true or false indicating whether this column is an identity, or null (Nothing in Visual Basic) when overridden in a derived class.
IsKey	Gets a nullable boolean value that indicates whether this column is a key, or returns null if no value is set. Can be set to either true or false indicating whether this column is a key, or null (Nothing in Visual Basic) when overridden in a derived class.
IsLong	Gets a nullable boolean value that indicates whether this column contains long data, or returns null if no value is set. Can be set to either true or false indicating whether this column contains long data, or null (Nothing in Visual Basic) when overridden in a derived class.
IsReadOnly	Gets a nullable boolean value that indicates whether this column is read-only, or returns null if no value is set. Can be set to either true or false indicating whether this column is read-only, or null (Nothing in Visual Basic) when overridden in a derived class.
IsUnique	Gets a nullable boolean value that indicates whether a unique constraint applies to this column, or returns null if no value is set. Can be set to either true or false indicating whether a unique constraint applies to this column, or null (Nothing in Visual Basic) when overridden in a derived class.
Item[String]	Gets the object based on the column property name.
NumericPrecision	Gets the numeric precision of the column data; otherwise, null if no value is set. Can be set to either an int32 value to specify the numeric precision of the column data or null when overridden in a derived class.
NumericScale	Gets a nullable int32 value that either returns null or the numeric scale of the column data. Can be set to either null or an int32 value for the numeric scale of the column data when overridden in a derived class.
UdtAssemblyQualifiedName	Gets the assembly-qualified name of the Type object that represents the type of data in the column; otherwise, null if no value is set. Can be set to either the assembly-qualified name or null when overridden in a derived class.

Methods

Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
GetHashCode()	Serves as the default hash function. (Inherited from Object)
GetType()	Gets the Type of the current instance. (Inherited from Object)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
ToString()	Returns a string that represents the current object. (Inherited from Object)