81 lines
3.1 KiB
VB.net
81 lines
3.1 KiB
VB.net
Public Class ClassDatabase
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Private Shared connectionString As String
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Public Shared Function Init()
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Try
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connectionString = MyConnectionString
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Dim SQLconnect As New SqlClient.SqlConnection
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SQLconnect.ConnectionString = connectionString
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SQLconnect.Open()
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SQLconnect.Close()
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Return True
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Catch ex As Exception
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ClassLogger.Add("Fehler bei DatabaseInit: " & ex.Message, True)
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Return False
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End Try
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End Function
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Public Shared Function Return_Datatable(Select_anweisung As String)
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Try
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Dim SQLconnect As New SqlClient.SqlConnection
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Dim SQLcommand As SqlClient.SqlCommand
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SQLconnect.ConnectionString = connectionString
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SQLconnect.Open()
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SQLcommand = SQLconnect.CreateCommand
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SQLcommand.CommandText = Select_anweisung
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Dim adapter1 As SqlClient.SqlDataAdapter = New SqlClient.SqlDataAdapter(SQLcommand)
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Dim dt As DataTable = New DataTable()
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adapter1.Fill(dt)
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SQLconnect.Close()
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Return dt
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Catch ex As Exception
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ClassLogger.Add("Fehler bei Return_Datatable: " & ex.Message, True)
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ClassLogger.Add("SQL: " & Select_anweisung, False)
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Return Nothing
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End Try
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End Function
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Public Shared Function Execute_non_Query(ExecuteCMD As String, Optional Userinput As Boolean = False)
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Try
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Dim SQLconnect As New SqlClient.SqlConnection
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Dim SQLcommand As SqlClient.SqlCommand
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SQLconnect.ConnectionString = connectionString
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SQLconnect.Open()
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SQLcommand = SQLconnect.CreateCommand
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'Update Last Created Record in Foo
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SQLcommand.CommandText = ExecuteCMD
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SQLcommand.ExecuteNonQuery()
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SQLcommand.Dispose()
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SQLconnect.Close()
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Return True
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Catch ex As Exception
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If Userinput = True Then
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MsgBox("Fehler bei Execute_non_Query: " & ex.Message, MsgBoxStyle.Critical)
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End If
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ClassLogger.Add("Fehler bei Execute_non_Query: " & ex.Message, True)
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ClassLogger.Add("SQL: " & ExecuteCMD, False)
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Return False
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End Try
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End Function
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Public Shared Function Execute_Scalar(cmdscalar As String)
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Dim result
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Try
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Dim SQLconnect As New SqlClient.SqlConnection
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Dim SQLcommand As SqlClient.SqlCommand
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SQLconnect.ConnectionString = connectionString
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SQLconnect.Open()
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SQLcommand = SQLconnect.CreateCommand
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'Update Last Created Record in Foo
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SQLcommand.CommandText = cmdscalar
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result = SQLcommand.ExecuteScalar()
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SQLcommand.Dispose()
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SQLconnect.Close()
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Return result
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Catch ex As Exception
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ClassLogger.Add("Fehler bei Execute_Scalar: " & ex.Message, True)
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ClassLogger.Add("SQL: " & cmdscalar, False)
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Return Nothing
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End Try
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End Function
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End Class
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