//Common DLL client, server
public class transferDataTable
{
public class myError
{
public string Message { get; set; }
public int Code { get; set; }
}
public myError Error { get; set; }
public List ColumnNames { get; set; }
public List DataTypes { get; set; }
public List Data { get; set; }
public int Count { get; set; }
}
public static class ExtensionMethod
{
public static transferDataTable LoadData(this transferDataTable transfer, DataTable dt)
{
if (dt != null)
{
transfer.DataTypes = new List();
transfer.ColumnNames = new List();
foreach (DataColumn c in dt.Columns)
{
transfer.ColumnNames.Add(c.ColumnName);
transfer.DataTypes.Add(c.DataType.ToString());
}
transfer.Data = new List();
foreach (DataRow dr in dt.Rows)
{
foreach (DataColumn col in dt.Columns)
{
transfer.Data.Add(dr[col] == DBNull.Value ? null : dr[col]);
}
}
transfer.Count = dt.Rows.Count;
}
return transfer;
}
public static DataTable GetDataTable(this transferDataTable transfer, bool ConvertToLocalTime = true)
{
if (transfer.Error != null || transfer.ColumnNames == null || transfer.DataTypes == null || transfer.Data == null)
return null;
int columnsCount = transfer.ColumnNames.Count;
DataTable dt = new DataTable();
for (int i = 0; i < columnsCount; i++ )
{
Type colType = Type.GetType(transfer.DataTypes[i]);
dt.Columns.Add(new DataColumn(transfer.ColumnNames[i], colType));
}
int index = 0;
DataRow row = dt.NewRow();
foreach (object o in transfer.Data)
{
if (ConvertToLocalTime && o != null && o.GetType() == typeof(DateTime))
{
DateTime dat = Convert.ToDateTime(o);
row[index] = dat.ToLocalTime();
}
else
row[index] = o == null ? DBNull.Value : o;
index++;
if (columnsCount == index)
{
index = 0;
dt.Rows.Add(row);
row = dt.NewRow();
}
}
return dt;
}
}
//Server
[OperationContract]
[WebInvoke(Method = "GET", ResponseFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.WrappedRequest, UriTemplate = "json/data")]
transferDataTable _Data();
public transferDataTable _Data()
{
try
{
using (SqlConnection con = new SqlConnection(ConfigurationManager.AppSettings["myConnString"]))
{
con.Open();
DataSet ds = new DataSet();
SqlDataAdapter myAdapter = new SqlDataAdapter("SELECT * FROM tbGalleries", con);
myAdapter.Fill(ds, "table");
DataTable dt = ds.Tables["table"];
return new transferDataTable().LoadData(dt);
}
}
catch(Exception ex)
{
return new transferDataTable() { Error = new transferDataTable.myError() { Message = ex.Message, Code = ex.HResult } };
}
}
//Client
Response = Vossa.getAPI(serviceUrl + "json/data");
transferDataTable transfer = new JavaScriptSerializer().Deserialize(Response);
if (transfer.Error == null)
{
DataTable dt = transfer.GetDataTable();
dbGrid.ItemsSource = dt.DefaultView;
}
else
MessageBox.Show(transfer.Error.Message, "Error", MessageBoxButton.OK, MessageBoxImage.Error);
加载中...