[英]load json data to wpf datagrid
我想将json数据加载到我的wpf datagrid中。 我已遵循本教程: http : //wpf-4-0.blogspot.com/2012/12/how-to-bind-json-data-to-datagrid-in.html
但是出了点问题,我不确定问题出在哪里。
我的XAML程式码:
<Button Click="btnLoad_Click" Content="Load" Width="50" Grid.Row="0"></Button>
<DataGrid Grid.Row="1" x:Name="albuminfo" AutoGenerateColumns="True"></DataGrid>
C#代码:
private void btnLoad_Click(object sender, RoutedEventArgs e)
{
WebRequest req = WebRequest.Create("http://coderomusic.com/beta/SecuredAdministrator/mobile/getInfo.php?_mod=album");
req.ContentType = "application/json";
WebResponse resp = req.GetResponse();
Stream stream = resp.GetResponseStream();
StreamReader re = new StreamReader(stream);
string json = re.ReadToEnd();
json = "{\"AlbumDetail\":" + json + "}";
Wrapper w = (Wrapper)new JavaScriptSerializer().Deserialize(json, typeof(Wrapper));
albuminfo.ItemsSource = w.albumdetail;
}
AlbumDetail类:
public class AlbumDetail
{
#region//private property
private int albumId;
private string albumName;
private DateTime releasedate;
private int productionId;
private string duration;
private string category;
private string themes;
private ImageBrush coverImage;
private ImageBrush profileImage;
private string description;
private double albumPrice;
private double specialPrice;
private int[] artistIds;
#endregion
#region//public property
public int[] ArtistIds
{
get { return artistIds; }
set { artistIds = value; }
}
public double SpecialPrice
{
get { return specialPrice; }
set { specialPrice = value; }
}
public double AlbumPrice
{
get { return albumPrice; }
set { albumPrice = value; }
}
public string Description
{
get { return description; }
set { description = value; }
}
public ImageBrush ProfileImage
{
get { return profileImage; }
set { profileImage = value; }
}
public ImageBrush CoverImage
{
get { return coverImage; }
set { coverImage = value; }
}
public string Themes
{
get { return themes; }
set { themes = value; }
}
public string Category
{
get { return category; }
set { category = value; }
}
public string Duration
{
get { return duration; }
set { duration = value; }
}
public int ProductionId
{
get { return productionId; }
set { productionId = value; }
}
public DateTime Releasedate
{
get { return releasedate; }
set { releasedate = value; }
}
public string AlbumName
{
get { return albumName; }
set { albumName = value; }
}
public int AlbumId
{
get { return albumId; }
set { albumId = value; }
}
#endregion
}
和包装类:
public class Wrapper
{
public List<AlbumDetail> albumdetail { get; set; }
}
最终结果如下图所示: https : //dl.dropboxusercontent.com/u/59201118/json.JPG (Dropbox链接,因为不允许发布图像!)
您应该在后台线程上发出Web请求,然后使用调度程序对象更新UI。 我已经修改了您的代码以使其正常工作。 这是重要的部分,
private static readonly ManualResetEvent AllDone = new ManualResetEvent(false);
private void BtnLoadClick(object sender, RoutedEventArgs e)
{
var request =
(HttpWebRequest)
WebRequest.Create("http://coderomusic.com/beta/SecuredAdministrator/mobile/getInfo.php?_mod=album");
request.ContentType = "application/json";
request.BeginGetResponse(GetResponseCallback, request);
AllDone.WaitOne();
}
private void GetResponseCallback(IAsyncResult ar)
{
var request = (HttpWebRequest) ar.AsyncState;
var response = (HttpWebResponse) request.EndGetResponse(ar);
Stream stream = response.GetResponseStream();
Wrapper w = null;
if (stream != null)
{
var re = new StreamReader(stream);
string json = re.ReadToEnd();
w = (Wrapper) new JavaScriptSerializer().Deserialize(json, typeof (Wrapper));
}
Dispatcher.BeginInvoke(
new Action(() => {
if (w != null)
albuminfo.ItemsSource = new ObservableCollection<AlbumDetail>(w.AlbumDetail);
}));
response.Close();
AllDone.Set();
}
根据您的需要进行更改。 我希望它能起作用。
简单易用的方法是使用nuget中的jsonorm并通过( http://json2csharp.com/ )从接收到的json创建数据层
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