Solved

How do I hide a button on page if datagrid empty

Posted on 2007-11-29
6
393 Views
Last Modified: 2013-11-26
I want to not display a button on a page if my datagrid is empty.

I just need to know hw to tell if the gridview is empty.


eg

If gridview1(whats the code to say it empty)

then
button1.visible = false
0
Comment
Question by:Ed
[X]
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
  • 4
  • 2
6 Comments
 
LVL 3

Accepted Solution

by:
j-w-thomas earned 250 total points
ID: 20373642
if gridview.Items.count = 0 then
        button1.visible = false
else
        button1.visible = true
end if

John
0
 
LVL 3

Assisted Solution

by:j-w-thomas
j-w-thomas earned 250 total points
ID: 20373656
You can also add on to hide the datagrid column headers as well, just to 'clean' up the page look.

if gridview1.Items.count = 0 then
        button1.visible = false
        gridview1.visible = false
else
        button1.visible = true
        gridview1.visible = true
end if

hth,

John
0
 

Expert Comment

by:Edjones
ID: 20373673

Thanks

does not work on

 Protected Sub GridView1_RowDataBound

what should I use?
0
VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

 
LVL 3

Expert Comment

by:j-w-thomas
ID: 20373704
Is it after the bind to the datagrid?

'/// first the bind ///
gridview1.dataBind()

'/// then the check for rows ///
if gridview1.Items.count = 0 then
        button1.visible = false
        gridview1.visible = false
else
        button1.visible = true
        gridview1.visible = true
end if

If not can you post the entire sub
0
 

Expert Comment

by:Edjones
ID: 20374415
I'm using a separe code file



    Protected Sub GridView1_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GridView1.RowDataBound
        If GridView.Items.count = 0 Then
            Button1.Visible = False
        Else
            Button1.Visible = True
        End If
 
 
    End Sub

Open in new window

0
 
LVL 3

Expert Comment

by:j-w-thomas
ID: 20378787
I thought that you had the entire sub finished except for this part. Is that true? I understand that you are a beginner on this subject, but it defintely needs more than that to work. Also you have it for a row command, is that waht you mean?

Try the code below and add in the correct select statement for your database and the connection string.

This is set up in a very simple format...
Sub BindData(s As Object, e As EventArgs)
 
Dim strSQLStatement As String = "SELECT * FROM TABLE_NAME"
Dim objCmd As OdbcCommand '/// or this needs to be OleDbCommand depending on your database
Dim objRdr As OdbcDataReader '/// or OleDbDataReader
'/// make sure that you have your connection string declared ///
	try		
		objCmd = New OdbcCommand(strSQLStatement,objConn)
		objConn.Open()
		objRdr = objCmd.ExecuteReader()
		dgDataGrid1.DataSource = objRdr
		dgDataGrid1.DataBind()
		objRdr.Close()
		objConn.Close()
		
		if dgDataGrid1.Items.Count = 0 then
			dgDataGrid1.Visible = false
			button1.visible = false
		else
			dgDataGrid1.Visible = true
			button1.visible = true
		end if
 
		if objConn.State = ConnectionState.Open then
			objConn.Close()
		end if
				
		catch objEx As Exception
				
			'/// you can put a custom error type message here ///
 
					
		finally
				
				if objConn.State = ConnectionState.Open then 
					objConn.Close() 
				end if
 
		end try
 
End Sub

Open in new window

0

Featured Post

A new era in Cloud training has arrived.

A day that will go down in Cloud history.. But are you ready for it? Will you accept this Cloud challenge?

Question has a verified solution.

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

For those of you who don't follow the news, or just happen to live under rocks, Microsoft Research released a beta SDK (http://www.microsoft.com/en-us/download/details.aspx?id=27876) for the Xbox 360 Kinect. If you don't know what a Kinect is (http:…
It was really hard time for me to get the understanding of Delegates in C#. I went through many websites and articles but I found them very clumsy. After going through those sites, I noted down the points in a easy way so here I am sharing that unde…
If you’ve ever visited a web page and noticed a cool font that you really liked the look of, but couldn’t figure out which font it was so that you could use it for your own work, then this video is for you! In this Micro Tutorial, you'll learn yo…
In this video you will find out how to export Office 365 mailboxes using the built in eDiscovery tool. Bear in mind that although this method might be useful in some cases, using PST files as Office 365 backup is troublesome in a long run (more on t…

623 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