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DataConnectionConfiguration.cs
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/
DataConnectionConfiguration.cs
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//------------------------------------------------------------------------------
// <copyright company="Microsoft Corporation">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml.Linq;
using System.IO;
namespace Microsoft.Data.ConnectionUI
{
/// <summary>
/// Provide a default implementation for the storage of DataConnection Dialog UI configuration.
/// </summary>
public class DataConnectionConfiguration : IDataConnectionConfiguration
{
private const string configFileName = @"DataConnection.xml";
private string fullFilePath = null;
private XDocument xDoc = null;
// Available data sources:
private IDictionary<string, DataSource> dataSources;
// Available data providers:
private IDictionary<string, DataProvider> dataProviders;
/// <summary>
/// Constructor
/// </summary>
/// <param name="path">Configuration file path.</param>
public DataConnectionConfiguration(string path)
{
if (!String.IsNullOrEmpty(path))
{
fullFilePath = Path.GetFullPath(Path.Combine(path, configFileName));
}
else
{
fullFilePath = Path.Combine(System.Environment.CurrentDirectory, configFileName);
}
if (!String.IsNullOrEmpty(fullFilePath) && File.Exists(fullFilePath))
{
xDoc = XDocument.Load(fullFilePath);
}
else
{
xDoc = new XDocument();
xDoc.Add(new XElement("ConnectionDialog", new XElement("DataSourceSelection")));
}
this.RootElement = xDoc.Root;
}
public XElement RootElement { get; set; }
public void LoadConfiguration(DataConnectionDialog dialog)
{
dialog.DataSources.Add(DataSource.SqlDataSource);
dialog.DataSources.Add(DataSource.SqlFileDataSource);
dialog.DataSources.Add(DataSource.OracleDataSource);
dialog.DataSources.Add(DataSource.AccessDataSource);
dialog.DataSources.Add(DataSource.OdbcDataSource);
dialog.DataSources.Add(SqlCe.SqlCeDataSource);
dialog.UnspecifiedDataSource.Providers.Add(DataProvider.SqlDataProvider);
dialog.UnspecifiedDataSource.Providers.Add(DataProvider.OracleDataProvider);
dialog.UnspecifiedDataSource.Providers.Add(DataProvider.OleDBDataProvider);
dialog.UnspecifiedDataSource.Providers.Add(DataProvider.OdbcDataProvider);
dialog.DataSources.Add(dialog.UnspecifiedDataSource);
this.dataSources = new Dictionary<string, DataSource>();
this.dataSources.Add(DataSource.SqlDataSource.Name, DataSource.SqlDataSource);
this.dataSources.Add(DataSource.SqlFileDataSource.Name, DataSource.SqlFileDataSource);
this.dataSources.Add(DataSource.OracleDataSource.Name, DataSource.OracleDataSource);
this.dataSources.Add(DataSource.AccessDataSource.Name, DataSource.AccessDataSource);
this.dataSources.Add(DataSource.OdbcDataSource.Name, DataSource.OdbcDataSource);
this.dataSources.Add(SqlCe.SqlCeDataSource.Name, SqlCe.SqlCeDataSource);
this.dataSources.Add(dialog.UnspecifiedDataSource.DisplayName, dialog.UnspecifiedDataSource);
this.dataProviders = new Dictionary<string, DataProvider>();
this.dataProviders.Add(DataProvider.SqlDataProvider.Name, DataProvider.SqlDataProvider);
this.dataProviders.Add(DataProvider.OracleDataProvider.Name, DataProvider.OracleDataProvider);
this.dataProviders.Add(DataProvider.OleDBDataProvider.Name, DataProvider.OleDBDataProvider);
this.dataProviders.Add(DataProvider.OdbcDataProvider.Name, DataProvider.OdbcDataProvider);
this.dataProviders.Add(SqlCe.SqlCeDataProvider.Name, SqlCe.SqlCeDataProvider);
DataSource ds = null;
string dsName = this.GetSelectedSource();
if (!String.IsNullOrEmpty(dsName) && this.dataSources.TryGetValue(dsName, out ds))
{
dialog.SelectedDataSource = ds;
}
DataProvider dp = null;
string dpName = this.GetSelectedProvider();
if (!String.IsNullOrEmpty(dpName) && this.dataProviders.TryGetValue(dpName, out dp))
{
dialog.SelectedDataProvider = dp;
}
}
public void SaveConfiguration(DataConnectionDialog dcd)
{
if (dcd.SaveSelection)
{
DataSource ds = dcd.SelectedDataSource;
if (ds != null)
{
if (ds == dcd.UnspecifiedDataSource)
{
this.SaveSelectedSource(ds.DisplayName);
}
else
{
this.SaveSelectedSource(ds.Name);
}
}
DataProvider dp = dcd.SelectedDataProvider;
if (dp != null)
{
this.SaveSelectedProvider(dp.Name);
}
xDoc.Save(fullFilePath);
}
}
public string GetSelectedSource()
{
try
{
XElement xElem = this.RootElement.Element("DataSourceSelection");
XElement sourceElem = xElem.Element("SelectedSource");
if (sourceElem != null)
{
return sourceElem.Value as string;
}
}
catch
{
return null;
}
return null;
}
public string GetSelectedProvider()
{
try
{
XElement xElem = this.RootElement.Element("DataSourceSelection");
XElement providerElem = xElem.Element("SelectedProvider");
if (providerElem != null)
{
return providerElem.Value as string;
}
}
catch
{
return null;
}
return null;
}
public void SaveSelectedSource(string source)
{
if (!String.IsNullOrEmpty(source))
{
try
{
XElement xElem = this.RootElement.Element("DataSourceSelection");
XElement sourceElem = xElem.Element("SelectedSource");
if (sourceElem != null)
{
sourceElem.Value = source;
}
else
{
xElem.Add(new XElement("SelectedSource", source));
}
}
catch
{
}
}
}
public void SaveSelectedProvider(string provider)
{
if (!String.IsNullOrEmpty(provider))
{
try
{
XElement xElem = this.RootElement.Element("DataSourceSelection");
XElement sourceElem = xElem.Element("SelectedProvider");
if (sourceElem != null)
{
sourceElem.Value = provider;
}
else
{
xElem.Add(new XElement("SelectedProvider", provider));
}
}
catch
{
}
}
}
}
}