问题描述
我创建了样本MVC devexpress Dashboard应用程序。
我收到错误'DevExpress.Dashboard.v16.2中发生了'System.NullReferenceException'类型的异常.Core.dll但在更新gloabal.asax.cs中的数据提取时未在用户代码中处理。
void RegisterDefaultDashboard （string dashboardId）
{
string dashboardLocalPath = Server.MapPath（string.Format（@〜/ App_Data / Dashboards / {0} .xml，dashboardId）） ;
SessionDashboardStorage.Instance.RegisterDashboard（dashboardId，XDocument.Load（dashboardLocalPath））;
ReloadExtract_Click（dashboardId）;
}
protected void ReloadExtract_Click（string dashboardId）
{
使用（Dashboard newDashboard = new Dashboard（））
{
newDashboard.LoadFromXml（Server.MapPath（string.Fo rmat（@〜/ App_Data / Dashboards / {0} .xml，dashboardId）））;
var dataSources = newDashboard.DataSources.OfType< dashboardextractdatasource>（）。ToArray（）;
foreach（dataSources中的DashboardExtractDataSource dataSource）
dataSource.UpdateExtractFile（）;
}
}
请建议我
我尝试过：
void RegisterDefaultDashboard（string dashboardId）
{
string dashboardLocalPath = Server.MapPath（string.Format（@〜/ App_Data / Dashboards / {0} .xml，dashboardId））;
SessionDashboardStorage.Instance.RegisterDashboard（dashboardId，XDocument.Load（dashboardLocalPath））;
ReloadExtract_Click（dashboardId）;
}
protected void ReloadExtract_Click（string dashboardId）
{
使用（仪表板newDashboard = new Dashboard（））
{
newDashboard.LoadFromXml（Server.MapPath（string.Format（@〜/ App_Data / Dashboards / {0} .xml，dashboardId）））;
var dataSources = newDashboard.DataSources.OfType< dashboardextractdatasource>（）。ToArray（）;
foreach（dataSources中的DashboardExtractDataSource dataSource）
dataSource.UpdateExtractFile（）;
}
}
I created Sample MVC devexpress Dashboard application.
I got an error 'An exception of type 'System.NullReferenceException' occurred in DevExpress.Dashboard.v16.2.Core.dll but was not handled in user code' while updating the data extract in gloabal.asax.cs.
void RegisterDefaultDashboard(string dashboardId)
{
string dashboardLocalPath = Server.MapPath(string.Format(@"~/App_Data/Dashboards/{0}.xml", dashboardId));
SessionDashboardStorage.Instance.RegisterDashboard(dashboardId, XDocument.Load(dashboardLocalPath));
ReloadExtract_Click(dashboardId);
}
protected void ReloadExtract_Click(string dashboardId)
{
using (Dashboard newDashboard = new Dashboard())
{
newDashboard.LoadFromXml(Server.MapPath(string.Format(@"~/App_Data/Dashboards/{0}.xml", dashboardId)));
var dataSources = newDashboard.DataSources.OfType<dashboardextractdatasource>().ToArray();
foreach (DashboardExtractDataSource dataSource in dataSources)
dataSource.UpdateExtractFile();
}
}
Please suggest me
What I have tried:
void RegisterDefaultDashboard(string dashboardId)
{
string dashboardLocalPath = Server.MapPath(string.Format(@"~/App_Data/Dashboards/{0}.xml", dashboardId));
SessionDashboardStorage.Instance.RegisterDashboard(dashboardId, XDocument.Load(dashboardLocalPath));
ReloadExtract_Click(dashboardId);
}
protected void ReloadExtract_Click(string dashboardId)
{
using (Dashboard newDashboard = new Dashboard())
{
newDashboard.LoadFromXml(Server.MapPath(string.Format(@"~/App_Data/Dashboards/{0}.xml", dashboardId)));
var dataSources = newDashboard.DataSources.OfType<dashboardextractdatasource>().ToArray();
foreach (DashboardExtractDataSource dataSource in dataSources)
dataSource.UpdateExtractFile();
}
}
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