Strange question?

When you use detailsview to edit a value, you can get the value on the page when adding the mode. When you are in edit mode, you cannot get the value.

String M_strsum = Sof. Common. gatewayfactory. getdefault (). fromcustomsql ( " Select count (*) as exercisesum from d_job_arithmeticexercise " ). Todataset (). Tables [ 0 ]. Rows [ 0 ] [ " Exercisesum " ]. Tostring ();
String M_strnormal = Gateway. Count < Arithmeticexercise > (Arithmeticexercise. _. fsort =   " 0 " ). Tostring ();
String M_strartifice = Gateway. Count < Arithmeticexercise > (Arithmeticexercise. _. fsort =   " 1 " ). Tostring ();
Dvarithmeticexampaper. defaultmode =   String . Isnullorempty (fguid) =   True   ? Detailsviewmode. insert: detailsviewmode. Edit;
This . Title = (Dvarithmeticexampaper. defaultmode = Detailsviewmode. Edit) ?   " Modify arithmetic questions " : " Add arithmetic questions " ;
Labelsum. Text = M_strsum;
Labelnormal. Text = M_strnormal;
Labelartifice. Text = M_strartifice; // When editing mode, three labels cannot get the value.

< Edititemtemplate >
< ASP: textbox ID = " Txtfexerciseamount " Cssclass = " Necessarycss " Runat = " Server " Text = ' <% # BIND ("fexerciseamount") %> '
Maxlength = " 3 " Onkeyup = " Value = value. Replace (/[^ \ D]/g ,'') " Value = ' Only numbers can be entered ' Onfocus = " If (value = 'only numbers allowed ') {value = ''} "
Onblur = " Return countvalidate (); " > </ ASP: textbox >
< ASP: regularexpressionvalidator ID = " Regularexpressionvalidator1 " Runat = " Server " Errormessage = " The question Count must be an integer! " Display = " Dynamic "
Controltovalidate = " Txtfexerciseamount " Validationexpression = " [1-9] \ D * " > </ ASP: regularexpressionvalidator >
Total number of questions: < ASP: Label runat = " Server " ID = " Labelsum "   > </ ASP: Label > (Basic questions: < ASP: Label runat = " Server " ID = " Labelnormal " > </ ASP: Label > & Nbsp; & Nbsp; & Nbsp; tips: < ASP: Label runat = " Server " ID = " Labelartifice " > </ ASP: Label > )

</ Edititemtemplate >

Three labels can be assigned to all the values during breakpoint debugging, but the value remains unchanged when the page is displayed.
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