I am using TempleteFields for all columns in my GridView. In that columns I am using only some fields for customization but not all.
Is there any performance issue with Databound Fields vs Templete Fields in a GridView...?
Do I need to replace the remaining columns with Databound Columns instead of TempletField columns...?
I have a GridView, and I want Column1 to be equal to datatable data (filled by a SqlDataAdapter). Then I have two other fields by the SqlDataAdapter (first name, last name), and I want to have those two fields combined to form Column2. I have a TemplateField for my GridView that combines the first name and last name with Eval()'s, but the GridView places this combined field TemplateField and puts it as the first column.
How can I do this so that TemplateField can go in between fields that are databound?
I need a form that displays three columns drawn directly from a database (no problems here) as well as two fields that require some complex calculations. Not only am I lost as to how to incorporate the calculations into the control, I don't know exactly how to write the calculations. I am working in Visual Web Developer 2008 with Vb.NET.
The first of the two fields should take the sum of all payments made by a given customer and divide it by a DailyMembershipRate, returning a DaysPaid variable. It should take this variable and a CustomerSince field for that particular customer and calculate a PaidThrough field.
The second of the two columns similarly requires the DaysPaid variable described above. It should subtract the CustomerSince field from the current date and return the value in days, giving a MembershipDays variable. Finally, it should subtract MembershipDays from the DaysPaid variable, again returning a value in days, and then multiply this by the DailyRate value for a Credit/Deficit field.
I realize this is a lot, but I haven't been able to find any documentation either online or in VWD or ASP.NET texts on this topic. I could really use some fellow user input.
For example when using a gridview. When you specify the columns
BoundField for example won't work if you are binding it to a field instead of a property.
I guess this is so because when the gridview is looking for the DataField property it looks for a property and not a field. Now the question is how can i change this behavior to make it possible to use fields. I know i have to inherit from the gridview, but i don't know where to go from there.
My gridview displays fields from a table and allows for edit, delete and insert. I need to add a column with a derived field which will be calculated every time the user is either entering a new row or editing the value of the weight field which is one of the fields of the gridview. This calculation is done in the fly and won't be saved in the database.
View 8 Repliesare below all 3 points the same?
1)<boundfield>
<asp:button ....>
</boundfield> [code].....
I have a sql data souce that returns several columns of data, and they are displayed in a DetailsView on a pretty simple vb.net page. I'm stuggling with one field though for the details view.
It's a template field, and if ClientType=1 (this value is determined else where on the page), then the label in the template field should have Text='<%# Bind("ClientName") %>', but if the ClientType = 0, then the label in the template field should have Text='<%# Bind("ClientTemporaryName") %>'
How do I tell the details view to set the text for ClientName to one or the other?
[Code]....
I have seen a number of posts on this, but none that quite serve my needs. I have a GridView with template fields. I use postback because when a value is entered in one field a calculation is done to supply the value in another field. I simply loop through all the rows after each postback (there are not many so it is fast). I do not use a select command or button to select a row. After postback I do not know how to return the focus to the row that was being used. I can return the focus to the first row just by using gridview1.focus.
View 11 RepliesI have a Gridview showing the data on one of my tables, and when I try to edit the data in one of the columns after I click update, rather than updating the record with the new value I typed in, the rows become null as in, everything in the row I just edited disappears. This inmediatly makes my application crash because one of the fields in my table (IssueDescription) doesn't allows null values.
This is the code, which is actually 100% auto-generated from when I created the GridView control and specified in the options to implement update, delete, edit options.
<asp:GridView ID="GridView1" runat="server" AllowPaging="True"
AutoGenerateColumns="False" DataKeyNames="ticketNum"
DataSourceID="SqlDataSource1" [code].....
What is making the rows turn into null after the update? I did some research and tried to define the Update behaviour myself using RowUpdating function. After hours of learning how to use it I got it to "work", but because the Update turns everything to null when it updates, the sqlconnection command I use to do the query sends null anyways. I can paste the C# code if you'd like to see it, though I'd rather not use it if the auto-generated by asp above can be fixed instead.
I have a web page with an object data source that is connect to an object access layer which retrirevs an Id, Name_En and Name_Local from some table, the object data source is connected to a GirdView, In the girdview i have a template control with a label inside it, i want to change the binding expression for the label depending on the current states of localization so for example if the page is arabic the label should bind to "Name_Local", if it's english then it should bind to "Name_En"
View 1 RepliesI've got a gridiew with I've bound data to using a linq query as a datasource.The issue I have now is that I'm not sure how i can go about adjusting the appearance of the results in the fields.For example, if I want to turn the results in field 1 into a hyperlink (per record, e.g. record 1's hyperlink would point to url "x" and record's hyperlink 2 would point to url "y") which points to a location determined by a db query based on the record's value, how can I do that?And how would I go about adding columns that aren't present in the results, like a checkbox for each record?I suppose the stumbling block for me is that when using a linq query as a datasource, I am not presented with a layout of any kind in the aspx page, unless I use a linqtoSQL datasource (Which I would rather not use as I can't use complex queries with it....can I?
View 7 RepliesI have a gridview with a template field in it.How can i do paging in a gridview with template fields?
View 3 Repliesi want my gridview to be
1 - validate entries
2- check neccesary fields
before insertion or updation ?
Currently I have something like this, but when I click "update" the record doesn't get updated (but no error is returned).
[Code]....
i would like to create custom columns in the GridView Control.For example:After performing SQL query, there are 4 columns bound to the control:
1. ID
2. Name
3. LA
4. LE
Now, for each row, I would like to add column5. Custom - which would read LA and LE values from each row, assign them to variables vLA and vLE respectfuly, and then, I'd take vLA and vLE to perform custom calculations every time the page is displayed.I know how to make a custom colum to display calculated result, butCan someone please help me how to read LA and LE values for each row?
Im a newbie, hoping any experts can lend a hand. I have a gridview table connected to an SQL database. I have auto generated the update and delete methods to allow me to edit the gridview.
However, I would like the editable data in the gridview to be replaced by a selectable drop-down box. The drop down box is referencing an sql table for selection.
i was wondering if it is possible to make a gridview show only specific fields according to other fields in the grid view....
such as showing a button for one row but not the other due to different field values
I have a gridview which sources information dynamically from database.Here when i go for the default "AllowSorting" flag equal to true, i am able to achieve sorting of all displayed columns except the textBox control column whose values refreshes to zero.
View 5 RepliesI'm using Visual Web Developer 2010 against SQL Server 2008 R2.
I have a number of GridViews and FormViews working now, with edit functionality. However I have one field in my main database table that is of type 'Text'. With that one field, the edits won't take. I click Edit, change the text in the GridView, and click Update, but it just reverts back to the unchanged text.
It seems like I've tried everything. Is there a way to make that work without having to code it the hard way with a Textarea control?
I have a need to call Oracle stored procs to populate a gridview. I'm able to call one stored proc to get the column header text and another one to get the corresponding data. Currently I'm using a datareader, but I want my gridview to have sorting and paging enabled, so likely I'll need to read the data into a datatable and then bind the gridview to it.I've never had to manually configure a gridview - usually just use autoformatting.1. Do I essentially set up the columns manually in the gridview since it has no data to go off of in design mode? I'm guessing most of these will be Bound fields. A few of my columns are going to display date values that need to be formatted a certain way
and one column will be a link that needs to call a second method to populate a different grid. I'm not sure what the syntax for this is.
I have a sql database and want to store the image format into the database. I want to then display the image in a gridview. For the database I have entered the location of the image and not sure if this is the right thing to do. I'm not very good at this stuff so could you make it as simple as possible.
View 3 RepliesI have Two fileds the names are QtyRec and QtyReq in my table when These two are identical(10=10) then corresponding recrod should not listed in Gridview. Can any one provide solution
Gridview Code is
Public Sub retriveDataToDataGrid()
Try
Dim connectionString As String = "Database=pjt;" & "Data Source=localhost;" & "User Id=root;Password=prasad123"
Dim query As String = "Select WONumber,paertno,mfgpart,manufacturer,QtyRec,QtyReq,QtyShort,Duedate,Notes from ilist order by WOnumber"
Dim connection As New MySqlConnection(connectionString)
Dim da As New MySqlDataAdapter(query, connection)
Dim ds As New DataSet()
If da.Fill(ds) Then
GVIL.DataSource = ds.Tables(0)
GVIL.DataBind()
End If
connection.Close()
Catch ex As Exception
Console.WriteLine(ex.Message)
End Try
End Sub
I have a gridview that pops up when you click a link. It displays 5 columns.. if you click on the "select" link next to the record, i pass that rows values back to my form and submit the form again.. this works fine if i select a record that has all my form field values..
but if i pick a record that has some values that are empty it doesnt work.. after debugging im finding that for the fields that are blank on the screen, this is the value being passed " " which of course is not empty or null.. so my code doesnt know how to handle that.. i even tried to add .Trim() to the end of the gridview value and still getting that space being passed. How can i pass empty string instead of the for fields that dont have anything to pass?
This is my code i have for the SelectedIndexChanging event of the gridview
[Code]....
I have a GridView with a DropDownList in it bound to the [Applicants] table in SQL Server 2005.
The DropDownList Items Text and Value come from SqlDataSource3, "SELECT VoucherType, VoucherNumber FROM [Vouchers]"
I need to send the DDLs selected Text to [Applicants].[VoucherTypeIssued] and the Value to [Applicants]. VoucherNumber]
I already have a "dlVoucherTypeIssued_SelectedIndexChanged" event in the code behind to put "Voucher Issued" into [dbo].[Vouchers].[VoucherStatus]. I'm having trouble getting all three values written to the database at the same time.
I need to display Name1 and Name2 in a single column in gridview. I am using Linq. How is this done.
View 2 Replies
