How to find controls in a repeater header or footer

Question

I was wondering how one would find the controls in the HeaderTemplate or FooterTemplate of an Asp Net Repeater control   I can access them on the ItemDataBound event  but I was wondering how to get them after  for example to retrieve a value of an input in the header footer    Note  I posted this question here after finding the answer just so that I remember it  and maybe other people might find this useful

User · Accepted Answer

As noted in the comments  this only works AFTER you ve DataBound your repeater   To find a control in the header   lblControl   repeater1 Controls 0  Controls 0  FindControl  lblControl      To find a control in the footer   lblControl   repeater1 Controls repeater1 Controls Count - 1  Controls 0  FindControl  lblControl        With extension methods  public static class RepeaterExtensionMethods       public static Control FindControlInHeader this Repeater repeater  string controlName                return repeater Controls 0  Controls 0  FindControl controlName              public static Control FindControlInFooter this Repeater repeater  string controlName                return repeater Controls repeater Controls Count - 1  Controls 0  FindControl controlName

User · Answer

The best and clean way to do this is within the Item Created Event        protected void rptSummary ItemCreated Object sender  RepeaterItemEventArgs e                        switch  e Item ItemType                                case ListItemType AlternatingItem                      break                  case ListItemType EditItem                      break                  case ListItemType Footer                      e Item FindControl ctrl                       break                  case ListItemType Header                      break                  case ListItemType Item                      break                  case ListItemType Pager                      break                  case ListItemType SelectedItem                      break                  case ListItemType Separator                      break                  default                      break

User · Answer

You can take a reference on the control on the ItemCreated event  and then use it later

User · Answer

This is in VB NET  just translate to C  if you need it    lt Extension   gt  Public Function FindControlInRepeaterHeader Of T As Control  obj As Repeater  ControlName As String  As T     Dim ctrl As T   TryCast  From item As RepeaterItem In obj Controls                    Where item ItemType   ListItemType Header  SingleOrDefault FindControl ControlName  T      Return ctrl End Function   And use it easy   Dim txt as string   rptrComentarios FindControlInRepeaterHeader Of Label   lblVerTodosComentarios   Text   Try to make it work with footer  and items controls too

User · Answer

Better solution  You can check item type in ItemCreated event   protected void rptSummary ItemCreated Object sender  RepeaterItemEventArgs e        if  e Item ItemType    ListItemType Footer            e Item FindControl ctrl             if  e Item ItemType    ListItemType Header            e Item FindControl ctrl

User · Answer

private T GetHeaderControl lt T gt  Repeater rp  string id  where T   Control       T returnValue   null      if  rp    null  amp  amp   String IsNullOrWhiteSpace id                 returnValue   rp Controls Cast lt RepeaterItem gt    Where i   gt  i ItemType    ListItemType Header  Select h   gt  h FindControl id  as T  Where c   gt  c    null  FirstOrDefault              return returnValue      Finds and casts the control   Based on Piyey s VB answer

User · Answer

For ItemDataBound  protected void Repeater1 ItemDataBound object sender  RepeaterItemEventArgs e        if  e Item ItemType    ListItemType Header   header                   Control ctrl   e Item FindControl  ctrlID              else if  e Item ItemType    ListItemType Footer   footer                   Control ctrl   e Item FindControl  ctrlID

User · Answer

Find control into Repeater  Header  Item  Footer   public static class FindControlInRepeater       public static Control FindControl this Repeater repeater  string controlName                for  int i   0  i  lt  repeater Controls Count  i                if  repeater Controls i  Controls 0  FindControl controlName     null                  return repeater Controls i  Controls 0  FindControl controlName           return null

[asp.net] How to find controls in a repeater header or footer

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