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<H1 class="dtH1"><A NAME="topic_000000000000037F"></A>clsAktivitaet.SelectOne -Methode</H1>
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<P>Purpose: Select method. This method will Select one existing row from the database, based on the Primary Key.</P>
<PRE class="syntax"><SPAN class="lang">[Visual&nbsp;Basic]
</SPAN><B>Public Overrides Function SelectOne() As <a href="ms-help://MS.NETFrameworkSDKv1.1/cpref/html/frlrfSystemDataDataTableClassTopic.htm">DataTable</a></B></PRE>
<H4 class="dtH4">Rückgabewert</H4>
<P>DataTable object if succeeded, otherwise an Exception is thrown.</P>
<H4 class="dtH4">Hinweise</H4>
<P>Properties needed for this method:
&lt;UL&gt;
&lt;LI&gt;iAktivitaetNr&lt;/LI&gt;
&lt;/UL&gt;
Properties set after a succesful call of this method:
&lt;UL&gt;
&lt;LI&gt;iErrorCode&lt;/LI&gt;
&lt;LI&gt;iAktivitaetNr&lt;/LI&gt;
&lt;LI&gt;iEreignisnr&lt;/LI&gt;
&lt;LI&gt;iAktivitaetStatusNr&lt;/LI&gt;
&lt;LI&gt;iPeriodizitaetnr&lt;/LI&gt;
&lt;LI&gt;daAusgeloest_am&lt;/LI&gt;
&lt;LI&gt;sEreignis&lt;/LI&gt;
&lt;LI&gt;sKostenart&lt;/LI&gt;
&lt;LI&gt;fBetrag&lt;/LI&gt;
&lt;LI&gt;sTermin&lt;/LI&gt;
&lt;LI&gt;sBeschreibung&lt;/LI&gt;
&lt;LI&gt;sBemerkung&lt;/LI&gt;
&lt;LI&gt;iSecuritylevelnr&lt;/LI&gt;
&lt;LI&gt;bAktiv&lt;/LI&gt;
&lt;LI&gt;daErstellt_am&lt;/LI&gt;
&lt;LI&gt;daMutiert_am&lt;/LI&gt;
&lt;LI&gt;iMutierer&lt;/LI&gt;
&lt;LI&gt;sKuendigungsfrist&lt;/LI&gt;
&lt;/UL&gt;
Will fill all properties corresponding with a field in the table with the value of the row selected.</P>
<H4 class="dtH4">Quellcode</H4>
<pre class="code"><SPAN class="lang">[Visual&nbsp;Basic]</SPAN>
Overrides Public Function SelectOne() As DataTable&nbsp;<br> Dim scmCmdToExecute As SqlCommand = New SqlCommand()&nbsp;<br> scmCmdToExecute.CommandText = &quot;dbo.[pr_Aktivitaet_SelectOne]&quot;&nbsp;<br> scmCmdToExecute.CommandType = CommandType.StoredProcedure&nbsp;<br> Dim dtToReturn As DataTable = new DataTable(&quot;Aktivitaet&quot;)&nbsp;<br> Dim sdaAdapter As SqlDataAdapter = new SqlDataAdapter(scmCmdToExecute)&nbsp;<br>&nbsp;<br> ' // Use base class' connection object&nbsp;<br> scmCmdToExecute.Connection = m_scoMainConnection&nbsp;<br>&nbsp;<br> Try&nbsp;<br> scmCmdToExecute.Parameters.Add(new SqlParameter(&quot;@iAktivitaetNr&quot;, SqlDbType.Int, 4, ParameterDirection.Input, False, 10, 0, &quot;&quot;, DataRowVersion.Proposed, m_iAktivitaetNr))&nbsp;<br> scmCmdToExecute.Parameters.Add(new SqlParameter(&quot;@iErrorCode&quot;, SqlDbType.Int, 4, ParameterDirection.Output, True, 10, 0, &quot;&quot;, DataRowVersion.Proposed, m_iErrorCode))&nbsp;<br>&nbsp;<br> If m_bMainConnectionIsCreatedLocal Then&nbsp;<br> ' // Open connection.&nbsp;<br> m_scoMainConnection.Open()&nbsp;<br> Else&nbsp;<br> If m_cpMainConnectionProvider.bIsTransactionPending Then&nbsp;<br> scmCmdToExecute.Transaction = m_cpMainConnectionProvider.stCurrentTransaction&nbsp;<br> End If&nbsp;<br> End If&nbsp;<br>&nbsp;<br> ' // Execute query.&nbsp;<br> sdaAdapter.Fill(dtToReturn)&nbsp;<br> m_iErrorCode = New SqlInt32(CType(scmCmdToExecute.Parameters.Item(&quot;@iErrorCode&quot;).Value, SqlInt32))&nbsp;<br>&nbsp;<br> If Not m_iErrorCode.Equals(New SqlInt32(LLBLError.AllOk)) Then&nbsp;<br> ' // Throw error.&nbsp;<br> Throw New Exception(&quot;Stored Procedure 'pr_Aktivitaet_SelectOne' reported the ErrorCode: &quot; &amp; m_iErrorCode.ToString())&nbsp;<br> End If&nbsp;<br>&nbsp;<br> If dtToReturn.Rows.Count &gt; 0 Then&nbsp;<br> m_iAktivitaetNr = New SqlInt32(CType(dtToReturn.Rows(0)(&quot;AktivitaetNr&quot;), Integer))&nbsp;<br> If dtToReturn.Rows(0)(&quot;Ereignisnr&quot;) Is System.DBNull.Value Then&nbsp;<br> m_iEreignisnr = SqlInt32.Null&nbsp;<br> Else&nbsp;<br> m_iEreignisnr = New SqlInt32(CType(dtToReturn.Rows(0)(&quot;Ereignisnr&quot;), Integer))&nbsp;<br> End If&nbsp;<br> If dtToReturn.Rows(0)(&quot;AktivitaetStatusNr&quot;) Is System.DBNull.Value Then&nbsp;<br> m_iAktivitaetStatusNr = SqlInt32.Null&nbsp;<br> Else&nbsp;<br> m_iAktivitaetStatusNr = New SqlInt32(CType(dtToReturn.Rows(0)(&quot;AktivitaetStatusNr&quot;), Integer))&nbsp;<br> End If&nbsp;<br> If dtToReturn.Rows(0)(&quot;Periodizitaetnr&quot;) Is System.DBNull.Value Then&nbsp;<br> m_iPeriodizitaetnr = SqlInt32.Null&nbsp;<br> Else&nbsp;<br> m_iPeriodizitaetnr = New SqlInt32(CType(dtToReturn.Rows(0)(&quot;Periodizitaetnr&quot;), Integer))&nbsp;<br> End If&nbsp;<br> If dtToReturn.Rows(0)(&quot;Ausgeloest_am&quot;) Is System.DBNull.Value Then&nbsp;<br> m_daAusgeloest_am = SqlDateTime.Null&nbsp;<br> Else&nbsp;<br> m_daAusgeloest_am = New SqlDateTime(CType(dtToReturn.Rows(0)(&quot;Ausgeloest_am&quot;), Date))&nbsp;<br> End If&nbsp;<br> If dtToReturn.Rows(0)(&quot;Ereignis&quot;) Is System.DBNull.Value Then&nbsp;<br> m_sEreignis = SqlString.Null&nbsp;<br> Else&nbsp;<br> m_sEreignis = New SqlString(CType(dtToReturn.Rows(0)(&quot;Ereignis&quot;), String))&nbsp;<br> End If&nbsp;<br> If dtToReturn.Rows(0)(&quot;Kostenart&quot;) Is System.DBNull.Value Then&nbsp;<br> m_sKostenart = SqlString.Null&nbsp;<br> Else&nbsp;<br> m_sKostenart = New SqlString(CType(dtToReturn.Rows(0)(&quot;Kostenart&quot;), String))&nbsp;<br> End If&nbsp;<br> If dtToReturn.Rows(0)(&quot;Betrag&quot;) Is System.DBNull.Value Then&nbsp;<br> m_fBetrag = SqlDouble.Null&nbsp;<br> Else&nbsp;<br> m_fBetrag = New SqlDouble(CType(dtToReturn.Rows(0)(&quot;Betrag&quot;), Double))&nbsp;<br> End If&nbsp;<br> If dtToReturn.Rows(0)(&quot;Termin&quot;) Is System.DBNull.Value Then&nbsp;<br> m_sTermin = SqlString.Null&nbsp;<br> Else&nbsp;<br> m_sTermin = New SqlString(CType(dtToReturn.Rows(0)(&quot;Termin&quot;), String))&nbsp;<br> End If&nbsp;<br> If dtToReturn.Rows(0)(&quot;Beschreibung&quot;) Is System.DBNull.Value Then&nbsp;<br> m_sBeschreibung = SqlString.Null&nbsp;<br> Else&nbsp;<br> m_sBeschreibung = New SqlString(CType(dtToReturn.Rows(0)(&quot;Beschreibung&quot;), String))&nbsp;<br> End If&nbsp;<br> If dtToReturn.Rows(0)(&quot;Bemerkung&quot;) Is System.DBNull.Value Then&nbsp;<br> m_sBemerkung = SqlString.Null&nbsp;<br> Else&nbsp;<br> m_sBemerkung = New SqlString(CType(dtToReturn.Rows(0)(&quot;Bemerkung&quot;), String))&nbsp;<br> End If&nbsp;<br> If dtToReturn.Rows(0)(&quot;Securitylevelnr&quot;) Is System.DBNull.Value Then&nbsp;<br> m_iSecuritylevelnr = SqlInt32.Null&nbsp;<br> Else&nbsp;<br> m_iSecuritylevelnr = New SqlInt32(CType(dtToReturn.Rows(0)(&quot;Securitylevelnr&quot;), Integer))&nbsp;<br> End If&nbsp;<br> If dtToReturn.Rows(0)(&quot;Aktiv&quot;) Is System.DBNull.Value Then&nbsp;<br> m_bAktiv = SqlBoolean.Null&nbsp;<br> Else&nbsp;<br> m_bAktiv = New SqlBoolean(CType(dtToReturn.Rows(0)(&quot;Aktiv&quot;), Boolean))&nbsp;<br> End If&nbsp;<br> If dtToReturn.Rows(0)(&quot;Erstellt_am&quot;) Is System.DBNull.Value Then&nbsp;<br> m_daErstellt_am = SqlDateTime.Null&nbsp;<br> Else&nbsp;<br> m_daErstellt_am = New SqlDateTime(CType(dtToReturn.Rows(0)(&quot;Erstellt_am&quot;), Date))&nbsp;<br> End If&nbsp;<br> If dtToReturn.Rows(0)(&quot;Mutiert_am&quot;) Is System.DBNull.Value Then&nbsp;<br> m_daMutiert_am = SqlDateTime.Null&nbsp;<br> Else&nbsp;<br> m_daMutiert_am = New SqlDateTime(CType(dtToReturn.Rows(0)(&quot;Mutiert_am&quot;), Date))&nbsp;<br> End If&nbsp;<br> If dtToReturn.Rows(0)(&quot;Mutierer&quot;) Is System.DBNull.Value Then&nbsp;<br> m_iMutierer = SqlInt32.Null&nbsp;<br> Else&nbsp;<br> m_iMutierer = New SqlInt32(CType(dtToReturn.Rows(0)(&quot;Mutierer&quot;), Integer))&nbsp;<br> End If&nbsp;<br> If dtToReturn.Rows(0)(&quot;Kuendigungsfrist&quot;) Is System.DBNull.Value Then&nbsp;<br> m_sKuendigungsfrist = SqlString.Null&nbsp;<br> Else&nbsp;<br> m_sKuendigungsfrist = New SqlString(CType(dtToReturn.Rows(0)(&quot;Kuendigungsfrist&quot;), String))&nbsp;<br> End If&nbsp;<br> End If&nbsp;<br> Return dtToReturn&nbsp;<br> Catch ex As Exception&nbsp;<br> ' // some error occured. Bubble it to caller and encapsulate Exception object&nbsp;<br> Throw New Exception(&quot;clsAktivitaet::SelectOne::Error occured.&quot;, ex)&nbsp;<br> Finally&nbsp;<br> If m_bMainConnectionIsCreatedLocal Then&nbsp;<br> ' // Close connection.&nbsp;<br> m_scoMainConnection.Close()&nbsp;<br> End If&nbsp;<br> scmCmdToExecute.Dispose()&nbsp;<br> sdaAdapter.Dispose()&nbsp;<br> End Try&nbsp;<br> End Function
</pre>
<H4 class="dtH4">Forderungen</H4>
<P><b class="le">Plattformen:&nbsp;</b>Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition</P>
<H4 class="dtH4">Siehe auch</H4>
<p>
<a href="topic_0000000000000369.html">clsAktivitaet</a>
</p>
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