Ed
asked on
How do I hide a button on page if datagrid empty
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
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
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SOLUTION
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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
'/// 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
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
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...
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
Thanks
does not work on
Protected Sub GridView1_RowDataBound
what should I use?