ASP.NET

Hiding Columns in Datagrids (C#)

20-May-08 11:23

This does not affect your connection to the database.

This has to do with the version of .NET your web config is calling for and the .NET configuration that's actually installed.

Is this web config left over from a beta .NET version?

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"When I first saw it, I just thought that you really, really enjoyed programming in java." - Leslie Sanford

Chris Beres20-May-08 7:55

20-May-08 7:55

Hey guys,

Using C#: To hide a column in my datagrid I'm using the code

grid1.Columns[4].Visible = false;

The column I am hiding is a bound column. Is there a smarter way to go about this rather than using an index number to hide the column since it will no doubt come back to bite me when I need to add/remove columns from my grid in the future.

Thanks for your help.

~Chris

keyboard warrior20-May-08 8:12

20-May-08 8:12

are you auto-populating columns?

you could always customize the "Select" command in the data source and remove in unnecessary fields being entered in.

you can do this in the menu's or right in the .aspx code.

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"When I first saw it, I just thought that you really, really enjoyed programming in java." - Leslie Sanford

Chris Beres20-May-08 8:25

20-May-08 8:25

I'm not auto-generating the columns in this instance, but if I was, I understand what you're saying.

So in my case here, am I stuck using a hard coded number to hide my column or is there a way to programatically find the column number of the column I want to hide?

Thanks again.

keyboard warrior20-May-08 8:36

20-May-08 8:36

if you want to hide it without doing it hardcoded...why not just take out that column from the result set that the grid shows. you could still use a where clause against the data.

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"When I first saw it, I just thought that you really, really enjoyed programming in java." - Leslie Sanford

Chris Beres20-May-08 8:56

20-May-08 8:56

The columns are defined before runtime so I can't take it out of the result set.

keyboard warrior20-May-08 9:14

20-May-08 9:14

So question...how do you bind the data? in the code behind? or do you use gridview / data source controls and "edit the columns" in the GUI?

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"When I first saw it, I just thought that you really, really enjoyed programming in java." - Leslie Sanford

Chris Beres20-May-08 9:23

20-May-08 9:23

I'm using code to bind the data. I also have some template columns in my grid that aren't populated from my data source (sql server).

keyboard warrior20-May-08 9:38

Problem with ASP.NET page submiting to other page using target method

20-May-08 9:38

Okay what about

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

{
if block here...
e.Row.Cells[0].Visible = false;
}

this is runtime and you could put an if block in to handle the logic.

or:

GridView1.DataBind();
if (GridView1.Columns.Count > 0)
GridView1.Columns[0].Visible = false;
else
{
GridView1.HeaderRow.Cells[0].Visible = false;
foreach (GridViewRow gvr in GridView1.Rows)
{
gvr.Cells[0].Visible = false;
}
}

if that helps

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"When I first saw it, I just thought that you really, really enjoyed programming in java." - Leslie Sanford

The8at20-May-08 7:14

The8at

20-May-08 7:14

I have a bit of a problem whereby I want a single control page to have several list boxes and several buttons on it.

The list boxes are dynamic based on what was selected in their parent list box. The list boxes use autopostback "__DoPostBack" to allow
efficient interaction.

However, when a button is clicked the form should be posted back to the server to a different aspx page and also in
a different target window.

The control page is essentially allows a user to drill down information via the select boxes. Once they have found the
info they are wanting, they can then click one of four buttons which will each display a different report in a new
window.

Unfortunately, currently, when we set the form targat and action to accomodate this, once the new window opens and
we return back to the control page to find some more information to view more reports etc. it still retains the same
target and action of the previous report view.

can you help

model security

raquidd2220-May-08 6:10

raquidd22

20-May-08 6:10

Hello

some one can help me

i have to create a model security where a user login have a role

next the application can refuse the access only a one component (example refuse a use a button o panel)of the page asp net

some one know article model security

regards

Re: model security

keyboard warrior20-May-08 7:47

DetailsView show the right ID from SQL Database

20-May-08 7:47

if users have roles you should be able to use the web.config file to set up a restriction on any single .aspx page or a folder.

for example:

</system.web>

<location path="admin.aspx">
<system.web>
<authorization>
<allow roles="admin" />
<deny users="*" />
</authorization>
</system.web>
</location>

</configuration>

-----------------------------------------------------------
"When I first saw it, I just thought that you really, really enjoyed programming in java." - Leslie Sanford

Frozzare20-May-08 5:38

Frozzare

20-May-08 5:38

Hi,

I have a GridView on a Default.aspx site, and when i click select ont the right field, then go to ShowUser.aspx?ID=23

How do i get the DetailsView to understand that then will show ID=23 when you select that id on default.aspx?

Hope you get it Smile | :)

Re: DetailsView show the right ID from SQL Database

keyboard warrior20-May-08 6:16

Re: DetailsView show the right ID from SQL Database

20-May-08 6:16

you mean you want to "show more details" when someone clicks on an item in the gridview?
if that is correct, this goes thoroughly over this topic:
http://www.beansoftware.com/ASP.NET-Tutorials/GridView-DetailsView.aspx[^]

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"When I first saw it, I just thought that you really, really enjoyed programming in java." - Leslie Sanford

Frozzare20-May-08 7:27

Frozzare

20-May-08 7:27

Thanks for the link Smile | :)

Re: DetailsView show the right ID from SQL Database

keyboard warrior20-May-08 7:38

disabling a row in gridview

20-May-08 7:38

if you have any trouble let me know, i did this recently and found it a little troublesome when it comes to setup Smile | :)

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"When I first saw it, I just thought that you really, really enjoyed programming in java." - Leslie Sanford

Banjo Ayorinde20-May-08 5:25

Banjo Ayorinde

20-May-08 5:25

Hi friend,

How do i disable a row in an asp.net Gridview based on value of one of its columns. Am using C#.Net 2008

Thanks in anticipation of your assistance

Re: disabling a row in gridview [modified]

keyboard warrior20-May-08 5:47