[英]Using Ninject with objectdatasource in asp.net webforms?
I am trying to use Ninject 3 in my asp.net webforms application. 我正在尝试在asp.net Webforms应用程序中使用Ninject 3。 It works fine except some pages that contains
ObjectDataSource
, the Select
method of the ObjectDataSource
throws a NullReferenceException
. 它工作正常,除了包含一些网页
ObjectDataSource
时, Select
的方法ObjectDataSource
抛出一个NullReferenceException
。 My code is as follows : 我的代码如下:
Web.Admin.Grades.aspx
: Web.Admin.Grades.aspx
:
<asp:ObjectDataSource ID="ObjectDataSource1" runat="server"
EnablePaging="true" TypeName="Web.Admin.Grades"
SelectMethod="GetData" SelectCountMethod="GetDataCount"
StartRowIndexParameterName="StartRowIndex" MaximumRowsParameterName="MaximumRows">
<SelectParameters>
<asp:ControlParameter ControlID="SearchTxtBox" Type="String" Name="SearchKeyWord" PropertyName="Text" />
</SelectParameters>
</asp:ObjectDataSource>
Web.Admin.Grades.cs
: Web.Admin.Grades.cs
:
[Inject]
public IGradesRepository _Grades { get; set; }
public IList GetData(string SearchKeyWord, int StartRowIndex, int MaximumRows)
{
return _Grades.GetGrades(SearchKeyWord, StartRowIndex, MaximumRows);
}
public int GetDataCount(string SearchKeyWord)
{
return _Grades.GetGradesCount(SearchKeyWord);
}
Sorry for misunderstanding I solve the problem as follows 抱歉造成误解,我解决了以下问题
<asp:ObjectDataSource ID="ObjectDataSource1" runat="server"
EnablePaging="true" TypeName="Domain.Abstract.IGradesRepository"
SelectMethod="GetGrades" SelectCountMethod="GetGradesCount" OnObjectCreating="ObjectDataSource1_ObjectCreating"
StartRowIndexParameterName="StartRowIndex" MaximumRowsParameterName="MaximumRows">
<SelectParameters>
<asp:ControlParameter ControlID="SearchTxtBox" Type="String" Name="SearchKeyWord" PropertyName="Text" />
</SelectParameters>
</asp:ObjectDataSource>
and Web.Admin.Grades.cs: 和Web.Admin.Grades.cs:
[Inject]
public IGradesRepository _Grades { get; set; }
protected void ObjectDataSource1_ObjectCreating(object sender, ObjectDataSourceEventArgs e)
{
e.ObjectInstance = _Grades;
}
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