Evento WorkbookBase.BeforeXmlImport
Ocorre antes que uma conexão de dados existente XML seja atualizada ou antes que os novos dados XML sejam importados na pasta de trabalho.
Namespace: Microsoft.Office.Tools.Excel
Assembly: Microsoft.Office.Tools.Excel.v4.0.Utilities (em Microsoft.Office.Tools.Excel.v4.0.Utilities.dll)
Sintaxe
'Declaração
Public Event BeforeXmlImport As WorkbookEvents_BeforeXmlImportEventHandler
public event WorkbookEvents_BeforeXmlImportEventHandler BeforeXmlImport
Exemplos
O exemplo de código a seguir demonstra como importar dados XML para uma pasta de trabalho. O exemplo cria um DataSet de nomes de cliente e adiciona um XmlMap com base no esquema XML para o DataSet à coleção XmlMaps da pasta de trabalho atual. Em seguida, o exemplo chama o método XmlImportXml para importar os dados na planilha Sheet1. Quando o método de XmlImportXml é chamado, o manipulador de eventos BeforeXmlImport solicita ao usuário com continua ou cancela importar XML, e os relatórios do manipulador de eventos AfterXmlImport se XML ser importado com êxito.
Este exemplo destina-se a uma personalização no nível de documento.
Private Sub WorkbookXmlImportEvents()
' Create a new DataTable.
Dim ds As New DataSet()
Dim dt As DataTable = ds.Tables.Add("Customers")
dt.Columns.Add(New DataColumn("LastName"))
dt.Columns.Add(New DataColumn("FirstName"))
' Add a new row to the DataTable.
Dim dr As DataRow = dt.NewRow()
dr("LastName") = "Chan"
dr("FirstName") = "Gareth"
dt.Rows.Add(dr)
' Add a new XML map to the collection.
Dim xmlMap1 As Excel.XmlMap = Me.XmlMaps.Add(ds.GetXmlSchema(), _
"NewDataSet")
' Import the data stream if the XmlMap was successfully created.
If Not (xmlMap1 Is Nothing) Then
' This will raise the BeforeXmlImport and AfterXmlImport events.
Dim range1 As Excel.Range = Globals.Sheet1.Range("A1")
Me.XmlImportXml(ds.GetXml(), xmlMap1, True, _
range1)
Else
MsgBox("The XmlMap could not be created")
End If
End Sub
Sub ThisWorkbook_BeforeXmlImport(ByVal Map As Excel.XmlMap, _
ByVal Url As String, ByVal IsRefresh As Boolean, _
ByRef Cancel As Boolean) Handles Me.BeforeXmlImport
If DialogResult.No = MessageBox.Show("Microsoft Excel is about" & _
" to import XML into the workbook. Continue with importing?", _
"Custom XML Import Dialog", MessageBoxButtons.YesNo) Then
Cancel = True
End If
End Sub
Sub ThisWorkbook_AfterXmlImport(ByVal Map As Excel.XmlMap, _
ByVal IsRefresh As Boolean, ByVal Result As Excel.XlXmlImportResult) _
Handles Me.AfterXmlImport
If Result = Excel.XlXmlImportResult.xlXmlImportSuccess Then
MsgBox("XML import succeeded.")
Else
MsgBox("XML import failed.")
End If
End Sub
private void WorkbookXmlImportEvents()
{
this.BeforeXmlImport +=
new Excel.WorkbookEvents_BeforeXmlImportEventHandler(
ThisWorkbook_BeforeXmlImport);
this.AfterXmlImport += new
Excel.WorkbookEvents_AfterXmlImportEventHandler(
ThisWorkbook_AfterXmlImport);
// Create a new DataTable.
DataSet ds = new DataSet();
DataTable dt = ds.Tables.Add("Customers");
dt.Columns.Add(new DataColumn("LastName"));
dt.Columns.Add(new DataColumn("FirstName"));
// Add a new row to the DataTable.
DataRow dr = dt.NewRow();
dr["LastName"] = "Chan";
dr["FirstName"] = "Gareth";
dt.Rows.Add(dr);
// Add a new XML map to the collection.
Excel.XmlMap xmlMap1 = this.XmlMaps.Add(ds.GetXmlSchema(),
"NewDataSet");
// Import the data stream if the XmlMap was successfully created.
if (xmlMap1 != null)
{
// This will raise the BeforeXmlImport and AfterXmlImport events.
Excel.Range range1 = Globals.Sheet1.Range["A1"];
this.XmlImportXml(ds.GetXml(), out xmlMap1, true,
range1);
}
else
{
MessageBox.Show("The XmlMap could not be created");
}
}
void ThisWorkbook_BeforeXmlImport(Excel.XmlMap Map,
string Url, bool IsRefresh, ref bool Cancel)
{
if (DialogResult.No == MessageBox.Show("Microsoft Excel is about" +
" to import XML into the workbook. Continue with importing?",
"Custom XML Import Dialog", MessageBoxButtons.YesNo))
{
Cancel = true;
}
}
void ThisWorkbook_AfterXmlImport(Excel.XmlMap Map, bool IsRefresh,
Excel.XlXmlImportResult Result)
{
if (Result == Excel.XlXmlImportResult.xlXmlImportSuccess)
{
MessageBox.Show("XML import succeeded.");
}
else
{
MessageBox.Show("XML import failed.");
}
}
Segurança do .NET Framework
- Confiança total para o chamador imediato. O membro não pode ser usado por código parcialmente confiável. Para obter mais informações, consulte Usando bibliotecas de código parcialmente confiável.