What is the best practice regarding an integer primary key that reach it's maximum possible value at some point of time?
Is there any standard action that needs to be taken so such a situation is never reached?
This is a very practical problem, and I am sure many people out there must have addressed it already.
I wanna join all the field as a new col.
but how can i ignore the empty field because i always join the field and separate by space like the following.
select (field_1+' '+field_2+' '+field_3) as new_col from TABLEA
but if the field is empty, then there is the double space
how can i ensure all the space is one space only.
I have a gridview which is binded to a Sqldatasource. I would like to replace a column data field value to 'Not Applicable' if that column has got a value of 2 in database.
View 2 RepliesI have a 20 to 30 fields on a form. Most of them are optional. However, the users can fill out what they want. If a user dosen't fill in a field when data is sent to the database it's sent as blank, instead of NULL. Is there a way I can generically say "for all textboxes if Equals("") then DBNull.Value". Without going through each and every textbox?
View 2 RepliesThis is probably something very simple that I've over looked, but I have a template field in a details view. In the field there is a html <p> tag that is bound to a database field. The database field is set to nvarchar(max) and will usually be very long. When the text is loaded into the <p> tag, it is not wrapped and does not go onto a new line when it reaches the edge of the screen.
View 1 RepliesI'm currectly tryin to access a specific value in my database in a specific column. I'm tryin to use the primary key of the table to access the actual value in the row of that ID.
The current code:
[Code]....
Just iterates through the table and looking for any row with the boolean 'checkin' value is True, then it takes the 'id' value of that row and stores it into an array. Is there a way that I can access a another entry, and only that entry, in the table with the 'id' stored in the array?
Like if my data base contained and int, primarykey, `id` value, a boolean, `checkedin` value, and a `time` value, is there a way to access, lets say, the row with `id` equalling 3 and and the checkIn value from that row?
I'm trying to retreive a column value from gridview5 to use it in a query to display resuls in gridview, Also how do you hide a column in the grid?
Where (p.Link_ID Like GridView5.?
[code]....
i have a datatable with several columns and rows. now i want to copy the last column fully (all rows) and create the new column with that values.
it means last column values sholud be moved to new column (now this is the last column).
I am in VS2008 and in ReporViewer's Design page.
I have "Fruits" as column fields and Months as row fields and Sales as data field.
I have these columns:-
Apple, Orange, Pear.
However, I want it be displayed as
Orange, Pear, apple.
Any work around ?
Also I need a 4th column adding the Apple, Orange and Peer numbers total. How to do it in design view in VS2008 ?
I want to fix the gridview column width using bound field and also template field using vb.net ... How can i ?
View 1 RepliesBelow is the gridview with 3 columns and column 1 has panel scrollbar for each item/row:
Column 1 | Column 2 | Column 3
---------------------------------------------------
12345 ↑ | |
14323 | |
43345 | |
45678 | |
↓ | |
-------------------------------------
3333 ↑ | |
32123 | |
544444 | |
99088 | |
↓ |
-------------------------------------
The code on aspx is working well, but I don't want to use it in aspx.
<asp:TemplateField>
<HeaderStyle Width ="215px" Font-Names ="Tahoma" Font-Size ="9pt" />
<ItemStyle Width ="215px" />
<ItemTemplate>
[Code] ....
So, Â I have a datatable in codebehind show as :
 Private Sub GetNumbers()
'Create Table Manually
Dim dt As New DataTable()
'Add Columns to DataTable
dt.Columns.Add("Column 1", GetType(String))
[Code] .....
How to add  dynamically <asp:panel> scrollbar for the Column1  in the code behind.
Scenario:
I am creating a custom gridview control which has a custom CheckBoxTemplateField column (deriving from TemplateField class). This template field column has custom Checkboxheadertemplate (implementing ITemplate) and CheckboxItemTemplate (also implementing ITemplate). In InstantiateIn method of both templates (header as well as Item template), I am adding a checkbox control which has Autopostback = true.
My requirement is:
I want to mark all the values in the binding column of datasource if checkbox in headertemplate is checked. I dont want to mark only rows visible on grid. I WANT TO MARK ALL ROWS IN DATASOURCE. I want to do this in _CheckedChanged event of checkbox in header template.
Problem I am facing: When I check/uncheck the checkbox in header, it postbacks. so in OnCheckedChanged event, gridview's datasource is null. Secondly, in any event of gridview, I could access only those rows of datasource for which corresponding rows are visible in gridview through Gridviewrow.DataItem property. But I want to set it for all rows in datasource.
I create a table as picture below :
when I insert any character to column Name then A new string random will auto insert into column Random (picture below) I had used Trigger but It was error !
I want to column Random use to code :
DECLARE @myid uniqueidentifier
SET @myid = NEWID()
insert into table_1 values(@myid, substring(CONVERT(varchar(255), @myid), 1, 5))
but It must auto like column Number (column Number is Identity)
How to change a column from hyperlink field to button in Gridview?
My current code is as follows
<asp:TemplateField HeaderText="Click">
<ItemTemplate>
<asp:HyperLink ID="HyperLink1" runat="server"
NavigateUrl='<%# Eval("ID", "Detail.aspx?ID={0}") %>'
Target="_blank" Text="Detail"></asp:HyperLink>
</ItemTemplate>
<EditItemTemplate>
</EditItemTemplate>
</asp:TemplateField>
am binding a gridview to datatable ...and now i want to add a linkbutton/hyperlink as one of the columns in gridview (similar to checkbox field) ...am adding the Lbtn inside a template field ,but i want that column to come as last column ..but its coming as first column,,,how to acheive that??
moreover ,whn i clk on eack linkbutton a pop-up window has to come with submit and save and close buttons and functionality(is it better to use linkbutton or hyperlink??)...am using vs 2005
I want to change the width of column in Gridview bound field but it is not changing. Code Is;
<asp:BoundField DataField="Address" HeaderText="Address" SortExpression="Address">
<ItemStyle Width="500px" />
</asp:BoundField>
I need the yoy var %, bm % yoy bps, and opps generated to have a backcolor of gold. before it was a itemtemplate it was easy to change it in the codebehind but now that it is a itemtemplate it wont change anymore.
View 6 RepliesI am hosting a solution with an outside company so getting them to troubleshoot or send me log files is not working.
Is there a way from code or Global.asax file that I can trap Memory usage from my web application when it reaches a certain amount? Then figure out what is using all the memory
I have a grid that is built as well as populated dynamically through c# code. The grid has 3 columns(3 bound fields). And data is being populated in those bound fields through c# code programatically.
Elaborating my question: I have 3 bound field columns(col1, col2 & col3) . I have to increase the rowspan of col2 and col3 headertext's to 2 i.e I want the col2 and col3 header texts to span across two row cells. But the col1 header text should span across just 1 row. And the extra rowscell that is created under col1 due to the increase in the rowspans (of col2 and col3 boundfield headertexts) should be populated with some random text, i.e something like XXXXX
My gridview has id in first column but I have hidden it . How do I send the gridview id to next page in query string.
View 1 Repliesbelow data are getting from the db
COL1 Col2
a b
c d
i want to bind the col1 and col2 value in one template field column inside gridview .is this possible means how to do this below is the format i expected. i don;t want to do this in db ..
COL
a(b)
c(d)
I have 5 gridviews, all of of them have a Checkbox template field. I already did SUM of a specific column in the gridviews and displayed the Total in the gridview footers.
There is a submit button on the page as well.(this is not in a template column in the gridview)
what i do is select some rows in the gridviews by ticking the checkbox. Then I click on the submit button and the values change in the database and page refreshes with the new Total in the gridview footers. Any row that was ticked. the checkbox for that row in the gridview gets disabled. so cannot change the value again.
Now i want a way to show a popup with a SUM of those rows that are ticked recently and the SUM of already ticked and disabled rows before the values change for the ticked rows in the gridview when the submit button is clicked.
I am facing problem in my update statement,
Dim abc As String
abc = Request.QueryString("str")
Dim userName As String = CStr(Session("user"))
Label2.Text = userName
Dim MyConnection As New OdbcConnection(ConnStr)
MyConnection.Open()
Dim MyCommand As New OdbcCommand
MyCommand.Connection = MyConnection
If MyCommand.CommandText = "Select userid from week where userid ='" & userName & "'" Then
MyCommand.CommandText = "Update week Set value = '" & abc & "' where userid ='" & userName & "'"
Else
MyCommand.CommandText = "INSERT INTO week (value, userid) VALUES('" & abc & "','" & userName & "')"
End If
MyCommand.ExecuteNonQuery()
MyConnection.Close()
I have field_1, the data format store in the field is about "Mary, Amy, Billy, Ma"
how can i extract the record that the field_1 has Mary.
I can't use the like'%Mary%' because it can extract 'Ma' too.
I would like to extract exactly Mary. or can i split the field_1 by ',' in sql?
I used sqldatasouce and storeprocedure to populate DetailView. I need update few tables by pass parameters to my storeprocedure. but some value always lost (most of them is keyfield). when I checked those value through sqldatasource_updating event they are null . How can I get the correct value?
<asp:ControlParameter ControlID="DropDownList1" Name="Fname"
PropertyName="SelectedValue" Type="String" />
<asp:ControlParameter ControlID="DropDownList2" Name="Lname"
PropertyName="SelectedValue" Type="String" />
</SelectParameters>
<UpdateParameters>
<asp:Parameter Name="eid" Type="Int32" /> <--? why become null
<asp:Parameter Name="Fname" Type="String" />
<asp:Parameter Name="Lname" Type="String" />
<asp:Parameter Name="Room" Type="String" />
<asp:Parameter Name="Active" Type="String" />
<asp:Parameter Name="bid" Type="Int32" />
<asp:Parameter Name="bname" Type="String" />
<asp:Parameter Name="vid" Type="Int32" />
</UpdateParameters>