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RemoteIdHelper.cs
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RemoteIdHelper.cs
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Windows.Phone.PersonalInformation;
namespace ContactStoreTipsDemo
{
class RemoteIdHelper
{
private const string ContactStoreLocalInstanceIdKey = "LocalInstanceId";
public async Task SetRemoteIdGuid(ContactStore store)
{
IDictionary<string, object> properties;
properties = await store.LoadExtendedPropertiesAsync().AsTask<IDictionary<string, object>>();
if (!properties.ContainsKey(ContactStoreLocalInstanceIdKey))
{
// the given store does not have a local instance id so set one against store extended properties
Guid guid = Guid.NewGuid();
properties.Add(ContactStoreLocalInstanceIdKey, guid.ToString());
System.Collections.ObjectModel.ReadOnlyDictionary<string, object> readonlyProperties = new System.Collections.ObjectModel.ReadOnlyDictionary<string, object>(properties);
await store.SaveExtendedPropertiesAsync(readonlyProperties).AsTask();
}
}
public async Task<string> GetTaggedRemoteId(ContactStore store, string remoteId)
{
string taggedRemoteId = string.Empty;
System.Collections.Generic.IDictionary<string, object> properties;
properties = await store.LoadExtendedPropertiesAsync().AsTask<System.Collections.Generic.IDictionary<string, object>>();
if (properties.ContainsKey(ContactStoreLocalInstanceIdKey))
{
taggedRemoteId = string.Format("{0}_{1}", properties[ContactStoreLocalInstanceIdKey], remoteId);
}
else
{
// handle error condition
}
return taggedRemoteId;
}
public async Task<string> GetUntaggedRemoteId(ContactStore store, string taggedRemoteId)
{
string remoteId = string.Empty;
System.Collections.Generic.IDictionary<string, object> properties;
properties = await store.LoadExtendedPropertiesAsync().AsTask<System.Collections.Generic.IDictionary<string, object>>();
if (properties.ContainsKey(ContactStoreLocalInstanceIdKey))
{
string localInstanceId = properties[ContactStoreLocalInstanceIdKey] as string;
if (taggedRemoteId.Length > localInstanceId.Length + 1)
{
remoteId = taggedRemoteId.Substring(localInstanceId.Length + 1);
}
}
else
{
// handle error condition
}
return remoteId;
}
}
}