Using Eval item Handling Null Value and showing 0 against

Question

If dataitem is Null I want to show 0   lt asp Label ID  Label18  Text   lt    Eval  item     gt   runat  server  gt  lt  asp Label gt    How can I accomplish this

User · Answer

Use IIF    lt asp Label ID  Label18  Text   lt    IIF Eval  item   Is DBNull Value  0   Eval  item     gt    runat  server  gt  lt  asp Label gt

User · Answer

Try replacing  lt    Eval  item     gt  with  lt    If Eval  item     0 value     gt   or  lt    Eval  item       0 value    gt   when using C

User · Answer

You can also create a public method on the page then call that from the code-in-front   e g  if using C    public string ProcessMyDataItem object myValue      if  myValue    null           return  0 value          return myValue ToString        Then the label in the code-in-front will be something like    lt asp Label ID  Label18  Text   lt    ProcessMyDataItem Eval  item      gt   runat  server  gt  lt  asp Label gt    Sorry  haven t tested this code so can t guarantee I got the syntax of   lt    ProcessMyDataItem Eval  item      gt   entirely correct

User · Answer

try this code it might be useful -   lt      DataBinder Eval Container DataItem  ImageFilename   ToString                lt a  href   DataBinder Eval Container DataItem   link     gt  lt img  src   Images Products   DataBinder Eval Container DataItem    ImageFilename      border  0    gt  lt  a gt     gt

User · Answer

I don t know ASP NET very well  but can you use the ternary operator   http   en wikipedia org wiki Ternary operation  Something like       x Eval  item       Null   0   x

User · Answer

I m using this for string values    lt    String IsNullOrEmpty Eval  Data   ToString       0    Eval  Data     gt    You can also use following for nullable values    lt    Eval  Data      null    0    Eval  Data     gt    Also if you re using  net 4 5 and above I suggest you use strongly typed data binding    lt asp Repeater runat  server  DataSourceID  odsUsers  ItemType  Entity User  gt       lt ItemTemplate gt           lt    Item Title   gt       lt  ItemTemplate gt   lt  asp Repeater gt

User · Answer

Moreover  you can use  x   Eval  item      0  in this case   http   msdn microsoft com en-us library ms173224 aspx

User · Answer

It should work as well  Eval  item      null  0   Eval  item

User · Answer

I use the following for VB Net    lt    If Eval  item   ToString   Is DBNull Value   0 value   Eval  item      gt

User · Answer

Used a modified version of Jason s answer   public string ProcessMyDataItem object myValue      if  myValue ToString   Length  lt  1           return  0 value          return myValue ToString

User · Answer

I have tried this code and it works well for both null and empty situations      lt     Eval  item          Eval  item    null     0    Eval  item    gt

[asp.net] Using '<%# Eval("item") %>'; Handling Null Value and showing 0 against

Examples related to asp.net

Examples related to dataitem