102 lines
3.6 KiB
VB.net
102 lines
3.6 KiB
VB.net
Imports System.Runtime.CompilerServices
|
|
|
|
Public Module ModuleExtensions
|
|
Const UnixEraStartTicks As Long = 621355968000000000
|
|
|
|
' ======================================================
|
|
' === DATETIME
|
|
' ======================================================
|
|
|
|
<Extension()>
|
|
Public Function GetUnixTimestamp(pDate As Date) As Long
|
|
Dim UnixEraTicks = pDate.Ticks - UnixEraStartTicks
|
|
Return UnixEraTicks \ 10000
|
|
End Function
|
|
|
|
<Extension()>
|
|
Public Function DateFromUnix(pTimestamp As Long) As Date
|
|
Return New Date(UnixEraStartTicks + pTimestamp * 10000)
|
|
End Function
|
|
|
|
' ======================================================
|
|
' === STRING
|
|
' ======================================================
|
|
|
|
''' <summary>
|
|
''' Truncates a string to the specified length if it exceeds that length.
|
|
''' </summary>
|
|
''' <param name="pString">The string</param>
|
|
''' <param name="pLength">The maximum string length</param>
|
|
''' <returns>The truncated string</returns>
|
|
<Extension()>
|
|
Public Function Truncate(pString As String, pLength As Integer) As String
|
|
If String.IsNullOrEmpty(pString) Then Return pString
|
|
Return pString.Substring(0, Math.Min(pLength, pString.Length))
|
|
End Function
|
|
|
|
''' <summary>
|
|
''' Replaces single quotes in text for SQL Commands.
|
|
''' </summary>
|
|
''' <param name="pString">The string</param>
|
|
''' <returns>The escaped string.</returns>
|
|
<Extension()>
|
|
Public Function EscapeForSQL(pString As String) As String
|
|
Return ObjectEx.NotNull(pString, String.Empty).Replace("'", "''")
|
|
End Function
|
|
|
|
''' <summary>
|
|
''' Converts a string to boolean. Accepts true and 1 as truthy values
|
|
''' </summary>
|
|
''' <param name="pString">The input string</param>
|
|
''' <returns>True if input is true or 1, otherwise false.</returns>
|
|
<Extension()>
|
|
Public Function ToBoolean(pString As String) As Boolean
|
|
If String.IsNullOrEmpty(pString) Then Return False
|
|
Return (pString.Trim().ToLower() = "true") OrElse (pString.Trim() = "1")
|
|
End Function
|
|
|
|
' ======================================================
|
|
' === DATATABLE
|
|
' ======================================================
|
|
|
|
<Extension()>
|
|
Public Function ItemEx(Of T)(pRow As DataRow, pFieldName As String, Optional pDefaultValue As T = Nothing) As T
|
|
Try
|
|
Return ObjectEx.NotNull(pRow.Item(pFieldName), pDefaultValue)
|
|
Catch ex As Exception
|
|
Return Nothing
|
|
End Try
|
|
End Function
|
|
|
|
<Extension()>
|
|
Public Function ItemEx(Of T)(pRow As DataRow, pFieldIndex As Integer, Optional pDefaultValue As T = Nothing) As T
|
|
Try
|
|
Return ObjectEx.NotNull(pRow.Item(pFieldIndex), pDefaultValue)
|
|
Catch ex As Exception
|
|
Return Nothing
|
|
End Try
|
|
End Function
|
|
|
|
<Extension()>
|
|
Public Function FieldOrDefault(Of T)(pRow As DataRow, pFieldName As String, Optional pDefaultValue As T = Nothing) As T
|
|
Return ItemEx(pRow, pFieldName, pDefaultValue)
|
|
End Function
|
|
|
|
<Extension()>
|
|
Public Function FieldOrDefault(Of T)(pRow As DataRow, pFieldIndex As Integer, Optional pDefaultValue As T = Nothing) As T
|
|
Return ItemEx(pRow, pFieldIndex, pDefaultValue)
|
|
End Function
|
|
|
|
<Extension()>
|
|
Public Function First(pTable As DataTable) As DataRow
|
|
Try
|
|
If pTable Is Nothing OrElse pTable.Rows.Count = 0 Then
|
|
Return Nothing
|
|
End If
|
|
Return pTable.Rows.Item(0)
|
|
Catch ex As Exception
|
|
Return Nothing
|
|
End Try
|
|
End Function
|
|
End Module
|