// This example shows how to inspect and display different types of properties for a workspace. public void DisplayWorkspaceProperties(IWorkspace workspace) { // Cast the workspace to the IWorkspaceProperties interface. IWorkspaceProperties workspaceProperties = (IWorkspaceProperties)workspace; // Example #1: Check whether or not the workspace can execute SQL. The first step is to retrieve // the property. IWorkspaceProperty canExecuteSqlProperty = workspaceProperties.get_Property(esriWorkspacePropertyGroupType.esriWorkspacePropertyGroup, (int)esriWorkspacePropertyType.esriWorkspacePropCanExecuteSQL); // Now check whether the property is supported. if (canExecuteSqlProperty.IsSupported) { // If the property is supported, check its value. This property returns a boolean value. Boolean canExecuteSql = Convert.ToBoolean(canExecuteSqlProperty.PropertyValue); Console.WriteLine("Workspace can execute SQL: {0}", canExecuteSql); } else { // If the property is not supported, it‘s impossible to check its value. Console.WriteLine("esriWorkspacePropCanExecuteSQL is not supported by the workspace."); } // Example #2: Find the maximum field name length for the workspace. IWorkspaceProperty maxFieldNameLengthProperty = workspaceProperties.get_Property(esriWorkspacePropertyGroupType.esriWorkspaceTablePropertyGroup, (int)esriWorkspaceTablePropertyType.esriTablePropMaxFieldNameLength); // Now check whether the property is supported. if (maxFieldNameLengthProperty.IsSupported) { // If the property is supported, check its value. This property returns an integer value. int maxFieldNameLength = Convert.ToInt32(maxFieldNameLengthProperty.PropertyValue); Console.WriteLine("Maximum field name length: {0}", maxFieldNameLength); } else { // If the property is not supported, it‘s impossible to check its value. Console.WriteLine("esriTablePropMaxFieldNameLength is not supported by the workspace."); } }
时间: 2024-10-02 02:24:50