How to hide a TemplateField column in a GridView

Question

How can I hide a TemplateField column in a GridView   I tried the following    lt asp TemplateField ShowHeader  False  Visible   lt    MyBoolProperty   gt    gt   lt ItemTemplate gt       lt asp LinkButton ID  attachmentButton  runat  server        gt   lt  ItemTemplate gt      but it didn t work and gives the following error      Databinding expressions are only supported on objects that have a DataBinding event         System Web UI WebControls TemplateField does not have a DataBinding event    I tried also to hide it programmatically  but seems it s not possible to get a column by the name because there iss no name for TemplateField column

User · Answer

protected void gvLogMessageDetail RowDataBound object sender  GridViewRowEventArgs e                 if  e Row RowType    DataControlRowType Header                             if  rdlForImportOrExport SelectedIndex    1                                    e Row Cells 3  Visible   false                    e Row Cells 4  Visible   false                    e Row Cells 5  Visible   false                                else                                   e Row Cells 3  Visible   true                    e Row Cells 4  Visible   true                    e Row Cells 5  Visible   true                                          if  e Row RowType    DataControlRowType DataRow    skip header row                           try                                   if  rdlForImportOrExport SelectedIndex    1                                            e Row Cells 3  Visible   false                        e Row Cells 4  Visible   false                        e Row Cells 5  Visible   false                                        else                                           e Row Cells 3  Visible   true                        e Row Cells 4  Visible   true                        e Row Cells 5  Visible   true                                                        catch                                   ClientScript RegisterStartupScript GetType     Expand     lt SCRIPT   LANGUAGE  javascript  gt alert  There is binding problem in child grid     lt  script gt

User · Answer

A slight improvement using column name  IMHO       Private Sub GridView1 Init sender As Object  e As System EventArgs  Handles GridView1 Init     For Each dcf As DataControlField In GridView1 Columns         Select Case dcf HeaderText ToUpper             Case  CBSELECT                  dcf Visible   Me CheckBoxVisible                 dcf HeaderText     lt small gt Select lt  small gt           End Select     Next End Sub   This allows control over multiple column  I initially use a  technical  column name  matching the control name within  This makes it obvious within the ASCX page that it s a control column  Then swap out the name as desired for presentation  If I spy the odd name in production  I know I skipped something  The  ToUpper  avoids case-issues   Finally  this runs ONE time on any post instead of capturing the event during row-creation

User · Answer

try this   hiddencol               display none             viscol               display block          add following code on RowCreated Event of GridView  protected void OnRowCreated object sender  GridViewRowEventArgs e         if  e Row RowType    DataControlRowType DataRow                  e Row Cells 0  CssClass    hiddencol               else if  e Row RowType    DataControlRowType Header                  e Row Cells 0  CssClass    hiddencol

User · Answer

This can be another way to do it and validate nulls  DataControlField dataControlField   UsersGrid Columns Cast lt DataControlField gt    SingleOrDefault x   gt  x HeaderText     Email                if  dataControlField    null                  dataControlField Visible   false

User · Answer

For Each dcfColumn As DataControlField In gvGridview Columns     If dcfColumn HeaderText    ColumnHeaderText  Then         dcfColumn Visible   false                         End If Next

User · Answer

If appears to me that rows where Visible is set to false won t be accessible  that they are removed from the DOM rather than hidden  so I also used the Display  None approach  In my case  I wanted to have a hidden column that contained the key of the Row  To me  this declarative approach is a little cleaner than some of the other approaches that use code    lt style gt      HiddenCol display none                    lt  style gt      lt  --ROW ID--  gt         lt asp TemplateField HeaderText  Row ID  gt          lt HeaderStyle CssClass  HiddenCol    gt          lt ItemTemplate gt          lt asp Label ID  lblROW ID  runat  server  Text   lt    Bind  ROW ID     gt   gt  lt  asp Label gt          lt  ItemTemplate gt          lt ItemStyle HorizontalAlign  Right  CssClass  HiddenCol    gt          lt EditItemTemplate gt          lt asp TextBox ID  txtROW ID  runat  server  Text   lt    Bind  ROW ID     gt   gt  lt  asp TextBox gt          lt  EditItemTemplate gt          lt FooterStyle CssClass  HiddenCol    gt         lt  asp TemplateField gt

User · Answer

protected void OnRowCreated object sender  GridViewRowEventArgs e             e Row Cells columnIndex  Visible   false       If you don t prefer hard-coded index  the only workaround I can suggest is to provide a HeaderText for the GridViewColumn and then find the column using that HeaderText   protected void UsersGrid RowCreated object sender  GridViewRowEventArgs e          DataControlField UsersGrid Columns              Cast lt DataControlField gt                 Where fld   gt  fld HeaderText     Email                SingleOrDefault    Visible   false

User · Answer

Am I missing something    If you can t set visibility on TemplateField then set it on its content   lt asp TemplateField gt     lt ItemTemplate gt       lt asp LinkButton Visible   lt    MyBoolProperty   gt   ID  foo  runat  server        gt     lt  ItemTemplate gt   lt  asp TemplateField gt     or if your content is complex then enclose it into a div and set visibility on the div   lt asp TemplateField gt     lt ItemTemplate gt       lt div runat  server  visible   lt    MyBoolProperty    gt    gt         lt asp LinkButton ID  attachmentButton  runat  server        gt       lt  div gt     lt  ItemTemplate gt   lt  asp TemplateField gt

User · Answer

GridView1 Columns columnIndex  Visible   false

[asp.net] How to hide a TemplateField column in a GridView

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