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CachedDataItem Class

Represents a cached data object in a document-level customization that was created by using the Office development tools in Visual Studio.


Namespace:  Microsoft.VisualStudio.Tools.Applications
Assembly:  Microsoft.VisualStudio.Tools.Applications.ServerDocument (in Microsoft.VisualStudio.Tools.Applications.ServerDocument.dll)

[PermissionSetAttribute(SecurityAction.Demand, Name = "FullTrust")]
public sealed class CachedDataItem : CachedDataNodeBase

The CachedDataItem type exposes the following members.

Public propertyDataTypeGets or sets the assembly-qualified name of the type of the cached data object.
Public propertyIdGets or sets the name of the cached data object that is represented by the CachedDataItem.
Public propertySchemaGets or sets a schema that describes the cached data object that is represented by the CachedDataItem, if the cached data object is a DataSet or DataTable.
Public propertyXmlGets or sets the XML representation of the cached data object that is represented by the CachedDataItem.

Public methodEqualsDetermines whether the specified object is equal to the current object. (Inherited from Object.)
Public methodGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodSerializeDataInstanceSerializes data to the cached data object that is represented by the CachedDataItem.
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)

For more information about caching data in document-level customizations, see Caching Data and Accessing Data in Documents on the Server.

The following code example examines each CachedDataItem in the data cache of an Excel workbook and displays the name of each cached data object.

This example requires:

private void DisplayDataCacheContents(string documentPath)
    int runtimeVersion = 0;
    ServerDocument serverDocument1 = null;

        runtimeVersion = ServerDocument.GetCustomizationVersion(documentPath);

        if (runtimeVersion != 3)
            MessageBox.Show("This document does not have a Visual Studio Tools for " +
                "Office customization, or it has a customization that was created with " +
                "a version of the runtime that is incompatible with this version of the " +
                "ServerDocument class.");

        if (ServerDocument.IsCacheEnabled(documentPath))
            serverDocument1 = new ServerDocument(documentPath);
            System.Text.StringBuilder stringBuilder1 =
                new System.Text.StringBuilder();

            // Display all of the cached data items  
            // in the document. 
            foreach (CachedDataHostItem hostItem1 in
                stringBuilder1.Append("\nNamespace and class: ");
                stringBuilder1.Append(hostItem1.Id + "\n");
                foreach (CachedDataItem dataItem1 in
                    stringBuilder1.Append("     Data item: ");
                    stringBuilder1.Append(dataItem1.Id + "\n");
            MessageBox.Show("The specified document does not have cached data.");
    catch (System.IO.FileNotFoundException)
        System.Windows.Forms.MessageBox.Show("The specified document does not exist.");
    catch (UnknownCustomizationFileException)
        System.Windows.Forms.MessageBox.Show("The specified document has a file " +
            "extension that is not supported by Visual Studio Tools for Office.");
        if (serverDocument1 != null)

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
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