Code Behind Gridview Databind How To Retrieve Col Value?
Nov 15, 2011
I am databinding my gridview in VB code behind. Because of this I know I can not refer to the NewValues when text is entered into one of the edit boxes. I need to retrieve the value of a column in the RowUpdating event.I have tried to do this in a multide of ways, but each of my changes ends up breaking something else.None of these three methods is working....
Dim DT34 As String = DirectCast(GridView4.Rows.FindControl("Textbox1"), TextBox).Text
Dim TB1 As Label = GridView4.Rows(e.NewEditIndex).Cells(0).FindControl("Label1")
Dim tb1 As TextBox = GridView4.Rows(e.RowIndex).Cells(0).FindControl("TextBox1")
Dim IDVal As String = tb1.Text
In the following code, I am believe it is finding the control but it is not returning the value that was entered into the textbox.
Dim tb As TextBox = DirectCast(GRD4.Rows(index1).FindControl("TextBox1"), TextBox)
updateDescription = tb.Text
My field has been converted to a Template field in the Gridview instead of Boundfield.
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Aug 26, 2011
[Code]....
I know that if get datatable in gridview.datasource,ever write gridview.Databind.But I found coding of my friend. He write only get datatable in gridview.datasource but no write gridview.dataBind. Therefore, his coding is not error. Why? Don't need to dataBind?
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Jul 26, 2011
I have a DataAccessLayer that returns a datatable. The business layer calling it also returns a type datatable.In my form, I call the business layer as a datasource of my gridview and then I binded it.
This codes are working in C# but I have problems when I converted it to VB.NET. During databind it displays the error: Data source is an invalid type. It must be either an IListSource, IEnumerable, or IDataSource.
Can i not bind a datatable in my gridview in vb.net? What do you think is the problem?
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May 5, 2009
I have a datatable with verified 10 rows named dtable. I attempt to bind it to my gridview and nothing shows up on my asp.net page. Why do these relatively simple few lines not populate my gridview?
Dim con As SqlConnection = Nothing
Dim dTable As DataTable
Dim dataAdapter As SqlDataAdapter
Dim sqlcmd As String
[code]....
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Aug 4, 2011
I have a GridView on an ASP.NET page that I'm trying to bind to an object data source that I've set up to map to a vb object I made which accesses the DB. When I run the page, though, the gridview comes up empty.
The ObjectDataSource is definitely returning data. The paging parameters are making it to the underlying object. All the way until I get to the DataBind() call everything seems fine. But the grid comes up empty. Funny thing is, if I use the method that returns all records in the DB, the grid populates just fine. Only when I try to implement custom paging does display no records. I've tried using the wizards, I've tried diagrammatically setting it up and run time. No matter what I do I can't get paged data to display in the grid.
oDatasource = New ObjectDataSource()
oDatasource.EnablePaging = True
oDatasource.TypeName = "tblMessage"
oDatasource.SelectMethod = "GetTblMessageSubset"
[code]....
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Sep 27, 2010
I have a blank/unbound GridView control on my form and I am binding it in the code behind like this:[code]Running this code populates my GridView control with all the columns and data that _dataSet has. I want to display only some of the columns, change the column names, and rearrange some of these columns too (i want the last column from the actual sql database table to be displayed first in my GridView).
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Sep 27, 2011
Apparently, part of the problem is that while an ASP:GridView has an OnDataBound() event (which you can use in the code-behind), the corresponding HTML table that is produced does NOT, so you can attach that event to JavaScript. (Did I get that right?) So, that's why I'm having trouble with that bit of the issue. Back to the drawing board. I'm a desktop developer (WinForms with VB.NET) transitioning into ASP.NET development. My mind is really bending around the DOM and JavaScript and Session State and all of the stuff that goes along with web development. I'm not stupid, and I've done research (including hours of video watching and hundreds of pages of "Intro to ASP.NET" reading), but I keep hitting the wall with what seem to be fairly straightforward problems.
Basically, my current situation can be summed up as follows:
I have a page that runs a very long process initiated by the user. The long process can take up to a few minutes , so I want to indicate to the user that SOMETHING is happening.When the process has completed, I either have:
a. Results to show in a GridView
b. No results to show
If I have results to show, I want to display them. If I have no results to show, I want to show a label to the user that says "No results to show."
[Code]...
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Apr 21, 2011
I have a function that returns a list of account numbers as an Arraylist. I am trying to use each account as a command parameter in another sub routine to get more data about each account number. This only returns the data for the last account number in the arraylist. I need to use each account number, call the database, get the additional information and store ALL of the data into a Gridview (databind). Example: If I had 3 account numbers in my arraylist return 3 rows of data to the gridview. I am struggling with how to get ALL of the information for each value (account number) in the Arraylist. Can someone point me in the right direction?? I think this can be done but I am not certain if my approach is correct or not. Perhaps I need to create datatables that contain the additional information for each value passed via the arraylist.
Private Function ReturnMultAccts(ByVal strAcct) As ArrayList
Dim acctsDetail As New ArrayList
Dim dsn As String = Configurati
[code].....
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Sep 11, 2009
Please can you translate the above line of C# into VB.NET?At runtime, I'm trying to update an existing GridView column, as opposed to adding new columns, just before a DataBind()
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Jan 11, 2012
I have a GridView, without using SelectedIndexChanged, how can I retrieve the value of each row from GridView when click on each button in each row?this is my aspx code
[Code]...
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Jan 15, 2011
i have a button in gridview whose command name is "hold" i want when i click n hold button of first row then the whole row values will be transfererd to default2.aspx ...
and if i click the hold button of gridview second row then the second row value will be transferred to Default2.aspx ,,how to do that ?
i m using that ...but it always transfer the 1st row value even i select first last or middle row ..in gridview ....
[Code].....
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Jan 29, 2012
i have a gridview and inside i have a TimeSelector, but how am i going to retrieve the time from the gridview cause if normally it is a TextBox we will use this Dim rbSelect TextBox = DirectCast(GridView2.Cells(1).FindControl("TextBox"), TextBox)so how should i retrieve the time from the timeselector in the gridview?
time picker control:
<%@ Register Assembly="TimePicker" Namespace="MKB.TimePicker" TagPrefix="cc1" %>
<ItemTemplate>
[code].....
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Sep 22, 2011
I have a .aspx search screen that displays the results of the search in an asp:GridView component. There can be up to approx 1000 records returned by the search. I want to implememt paging on the grid so that only 15 records are displayed at any one time and the user can page through the results.
I am retrieving the records by passing search parameters to a WCF service which returns a List of particular entity objects. I create a Datatable and insert one DataRow per entity object from the List. I then bind the grid view to the Datatable.
This is how my grid is defined in the .aspx page:
<asp:GridView ID="gridCat" runat="server" AutoGenerateColumns="False" DataKeyNames="CatalogueID"
HeaderStyle-CssClass="fieldHeading" RowStyle-CssClass="fieldContent"
[Code]....
Is there a better way to do this (or am I doing it wrong)? If not, which of the 3 options do you think is the best? I'm leaning towards option 2 as I don't think option 1 is performant and I don't want to be sending loads of unnecessary data back to the browser as per option 3.
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Oct 18, 2011
I know how to loop through a GridView and extract each row using the for each loop as below, but I was looking for a easy way to loop through the datagrid and say extract the last 20 rows? Is it possible to go through in reverse order in vb.net?
For Each row As GridViewRow In InventHistoryGridView.Rows
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May 11, 2011
Create A Loop To Retrieve A Column Of Data From Gridview
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Apr 30, 2010
I would like to save Gridview with all of the columns value and reload the same grid without using database?
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Mar 16, 2011
I have a gridview in webform and a panel1 which I used as a modalpopup control. I wanna show panel as modalpopup per row item select using commandrow of gridview ... There are two controls inside panel1; literal1 and literal2. I want when the item in the gridview is selected by user then panel 1 shows as modalpopup which displays the records from gridview in panel 1 controls i.e literal1 , literal2. I want to retrieve the selected row item from gridview to modal popup panel1 control..
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Jan 6, 2011
how to retrieve the selected row cell value if it is visible property is false in gridview ?
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Jan 29, 2012
Basically I want tO retrieve a "TextBox1" which I add in to one of the new column (TemplateField) of the gridview and the rest of the column are data load from the sqldatasource control i will want to indicate the "TextBox1" basic value that i calculated...so the result is when the default.aspx is loaded (which mean page load) the "TextBox1" should have show the calculated value.
sO now is how am I going to retrieve that " TextBox1" from the gridview in order for me to indicate a value cause i dont need to use this code below as my gridview data is use the retrieve in sqldatasource in the design default.aspx
[Code]....
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Apr 11, 2011
i want 2 select data from data gridview and want retrive that data into another form in to the textbox ...is it possible ? i 'm doing like this for that
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.[code...]
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Jun 4, 2010
I have a form consisting of datagridview with as checkbox column. Now, when the user selects a row using checkbox, I want a new form to pop-up and the selected rows be displayed on that form..The rows in the table consist of quantity and cost of materials, so i also want that the total quantity be displayed in a textbox on the other form..Could anybody please suggest as to what should i use on the other form, as in, textbox, datagridview, table etc.
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Jun 30, 2009
I am trying to figure out how to write code for a for/next loop that will retrieve a particular column, or field to add the grand total of the objects located therein. This is what I have:
Private
Sub subCalculate()
'this sub is used to figure and list the total price of the selected category
Dim drArray() As DataRow
Dim pintCount As Integer
Dim pdecTotal As Decimal
[code]...
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Jan 16, 2010
I am looking for a function like this:Function(Line x) must return the line x as a string (where Line x is a line of code from Form1 I specify)
Example:
Function(Line 10) returns the code (instructions) from line 10 as a string
If Line 10 from Form1 is: "if a=b+c then...."
Function(Line 10) returns "if a=b+c then...."
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May 19, 2010
I have the following code in my form. I would like to retrieve data from the MS Access database to ListView1. What will be the code?
[Code]...
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May 19, 2012
I tried using the following codes but it's not working,
Dim Con As oledbconnection = new oledbconnection()
con.connectionstring = "Provider = Microsof.jet.OLEDB.4.0; Source=c:\program file\database.mdb"
dim sqlcmd as oledbcommand = new system.data.oledb.oledbcommand()
sqlcmd.commandtype=commandtype.storedprocedure
sqlcmd.commandtext = "query"
[Code]...
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Mar 7, 2009
I have just recently started using vb.net from vb6. I have written a program that retrieves certain posts from a forum. To clarify, it does this:
1) Login to forum and get SID
2) Navigate to a page (with SID) and retrieve required code.
Thats it.To retrieve the page source, im using this:
[Code]...
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Mar 30, 2011
I've been searching for quite a long time how to do this. I don't know how to set the colour of a row item in the GridView (WPF) using code I don't want an example in XAML. My data comes from me loading & pulling apart an XML file. I then put it into a small class with properties and those are bound to the column to populate the data. Later, it can begin some functions on the table's data. Because this takes at some times over 10 minutes it's on a thread & I would like to colour the rows I've completed parsing depending on the result. (IE: Red for HTTP error, Orange for XML parsing error ect...)This is the GridView's XAML:[code].....
I am then parsing the data using the url column. I am currently changing the selected item as I go through. I want to know if theres something I can do to change the specific item. Let's assume I'm on row 500: I use: setSelected(i) which uses Dispatcher to safely change the selected row. Is there anything I can do to change the colour as well?
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Apr 3, 2011
How can one obtain his/her database password with code while the admin privileges are proved to be sufficient by windows authentication?
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Mar 2, 2012
I tried the POP3 Implementation code to retrieve e-mail from Gmail. I tried the code I got from a link which was suggested from another thread. I'm supposed to receive responses like +OK or -Err but the problem is this is there's this odd characters that shows up in my MsgBox.
[Code]...
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Apr 24, 2010
I have a software coded using visual basic 2005. I don't have the 2005 version now and i need to edit that software. Is there any way to retrieve the code using vb2008 or vb2010? If not from where can i download the 2005 version? I need to do it at the earliest.
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