WorkbookBase.XmlImportXml Method

Artigo
01/07/2014

Imports an XML data stream that has been previously loaded into memory.

Namespace: Microsoft.Office.Tools.Excel
Assembly: Microsoft.Office.Tools.Excel.v4.0.Utilities (in Microsoft.Office.Tools.Excel.v4.0.Utilities.dll)

Syntax

'Declaration
Public Function XmlImportXml ( _
    data As String, _
    <OutAttribute> ByRef importMap As XmlMap, _
    overwrite As Object, _
    destination As Object _
) As XlXmlImportResult

public XlXmlImportResult XmlImportXml(
    string data,
    out XmlMap importMap,
    Object overwrite,
    Object destination
)

Parameters

data
Type: System.String

The data to import.

importMap
Type: Microsoft.Office.Interop.Excel.XmlMap%

The schema map to apply when importing the file.

overwrite
Type: System.Object

If a value is not specified for the Destination parameter, then this parameter specifies whether or not to overwrite data that has been mapped to the schema map specified in the ImportMap parameter. Set to true to overwrite the data or false to append the new data to the existing data. The default value is true. If a value is specified for the Destination parameter, then this parameter specifies whether or not to overwrite existing data. Set to true to overwrite existing data or false to cancel the import if data would be overwritten. The default value is true.

destination
Type: System.Object

The data will be imported into a new XML list in the Range specified.

Return Value

Type: Microsoft.Office.Interop.Excel.XlXmlImportResult
One of the XlXmlImportResult values.

Remarks

Do not specify a value for the Destination parameter if you want to import data into an existing mapping.

The following conditions will cause this method to generate run-time errors:

The specified XML data contains syntax errors.
The import process was cancelled because the specified data cannot fit into the worksheet.

Use the XmlImport method to import an XML data file into the current workbook.

Optional Parameters

For information on optional parameters, see Optional Parameters in Office Solutions.

Examples

The following code example demonstrates how to import XML data into a workbook. The example creates a DataSet of customer names and adds an XmlMap based on the XML schema for the DataSet to the XmlMaps collection of the current workbook. The example then calls the XmlImportXml method to import the data into worksheet Sheet1. When the XmlImportXml method is called, the BeforeXmlImport event handler prompts the user to either proceed with or cancel importing the XML, and the AfterXmlImport event handler reports whether the XML was successfully imported.

This example is for a document-level customization.

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.");
    }
}

.NET Framework Security

Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

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