Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

Hide column names in gridview

Posted on 2011-03-25
12
502 Views
Last Modified: 2012-05-11
I have Gridview where the first 4 columns are link buttons, next 6 columns come from the database and then I add 2 more columns to the datatable that is bound to the gridview.

I am trying to hide a couple of the columns from the db from the user but still need to access their values in the codebehind. I would perfer to hide these columns by name.

Thanks for the help.
0
Comment
Question by:DowntownIT
  • 5
  • 2
  • 2
  • +1
12 Comments
 
LVL 5

Expert Comment

by:bitref
ID: 35215762
You may get all data in a datatable then create a dataview to include required data onle. Set the dataviewas the data source for the grid.
0
 
LVL 2

Author Comment

by:DowntownIT
ID: 35216097
I don't see a way to remove or hide columns from the dataview. Is there a way?
0
 
LVL 7

Expert Comment

by:foobarr
ID: 35218545
Grid1.Columns("columnname").Visible = false
0
Master Your Team's Linux and Cloud Stack

Come see why top tech companies like Mailchimp and Media Temple use Linux Academy to build their employee training programs.

 
LVL 2

Author Comment

by:DowntownIT
ID: 35218599
This doesn't work for me. When I supply the index of the column, I get an index out of range. Trying it with the name as suggested, I get a conversion from string to integer error.

0
 
LVL 5

Expert Comment

by:bitref
ID: 35218695
The index is zero-based. So, try to subtract 1 from the column order.
0
 
LVL 2

Author Comment

by:DowntownIT
ID: 35218726
I did do that, The grid in the designer only has 4 columns but then I add more columns from the server side through the datatable. It is these columns that I need access to. I am able to hide any of the first 4 with no problems.
0
 
LVL 30

Expert Comment

by:MlandaT
ID: 35294561
Hide the columns in the RowDataBound event for the grid.

        protected void GridViewResults_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            e.Row.Cells[0].Visible = false;
        }

Open in new window


Finding the column index might be a bit tricky, but you perhaps use something like this:

NumberOfFixedGridColumns + myTable.Columns.IndexOf(NameOfColumnToHide)

e.g.  e.Row.Cells[4 + myTable.Columns.IndexOf["ContractValue"]].Visible = false;

0
 
LVL 2

Author Comment

by:DowntownIT
ID: 35314476
MlandaT,

Looks like this is almost there, I am getting an index out of range error. Looks like maybe paging is causing an issue. When I step through the code, I don't get the error until to what it looks like to be the footer where the pages are at. Does this sound right?
0
 
LVL 30

Accepted Solution

by:
MlandaT earned 500 total points
ID: 35314692
perhaps let's check to make sure that it is a DataRow like so...

        protected void GridViewResults_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            if(e.Row.RowType == DataControlRowType.DataRow) 
            {
                   e.Row.Cells[0].Visible = false;
            }
        }

Open in new window

0
 
LVL 2

Author Closing Comment

by:DowntownIT
ID: 35315041
That worked except that I changed it to look for the DataControlRowType.Pager row.

Thanks for the help!
0

Featured Post

DevOps Toolchain Recommendations

Read this Gartner Research Note and discover how your IT organization can automate and optimize DevOps processes using a toolchain architecture.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

A long time ago (May 2011), I have written an article showing you how to create a DLL using Visual Studio 2005 to be hosted in SQL Server 2005. That was valid at that time and it is still valid if you are still using these versions. You can still re…
Whether you've completed a degree in computer sciences or you're a self-taught programmer, writing your first lines of code in the real world is always a challenge. Here are some of the most common pitfalls for new programmers.

791 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question