I'm new bie to VB.NET.I want some help on the following requrement.
Table: trade_data(tradesourceid,description)
Data:
trade_data(1,'Indian Bull')
trade_data(2,'Golden way')
trade_data(3,'Indian Trades')
[Code]...
I am having difficulties populating a checkedlistbox (CLB) based on the selection(s) made in another. It should also be noted that I have a "Select All" checkbox at the top that checks/unchecks all of the items in the first CLB. Here's the code:
[Code]...
The first CLB is populated with an arraylist of values on the button click event. Based on whatever is checked in the first CLB, corresponding values from an arraylist of structures should fill the second CLB.The following code partially works until the "Select All" checkbox is clicked at which point if other values have been selected before "Select All" is checked, the second CLB is filled with the correct number of corresponding values BUT only those of the most recently selected item of the first CLB instead of all of corresponding values of all of the items that were not already selected.
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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?
The Dropdownlist data binding using throw common function. In this have a problem in passing dropdownlist.
Error: Object cannot be set an instance of object The code is below
Aspx Page Code:
<asp:DropDownList ID="ddlagent1" CssClass="ParameterTextBox" runat="server" AutoPostBack="false"></asp:DropDownList>
Protected Sub chkcity_CheckedChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles chkcity.CheckedChanged
[Code]...
I'm running the following query:
' Show which halls they are eligible for.
Dim dbRooms As New pbu_housingEntities
Dim gender As String = Session("gender").ToString
[Code]....
I have a dropdownlist in my repeater, the dropdownlist is databound by a datasource. Originally all the dropdownlist will have all the same item option. I try to do if one of the showing dropdownlist is selected one option, then in other dropdownlist this option will disapper.
here is the asp:
<asp:Repeater ID="UnitMatchRepeater" runat="server" DataSourceID="OldUnitsDataSource" >
<ItemTemplate>
<tr>
<td>
[code]....
I have created a wpf vb.net project and am trying to set a simple databing. I'm not quiet sure how to set my DataContext = this; in the codebind. Currently when i run the program my Label never is updated. I have included my code below. [code]....
View 1 RepliesI 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?
After listing the data from data base to combo box, I would like bind the chosen data from combo box to textbox.
'bind from combo box to textbox
Dim ConString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:\Car Rental Data\Mutiata Company Car Rental System1.mdb"
Try
'open connection
[Code] .....
I have try using this code to bind the data from combo box to textbox, but unsuccessful to display the data in textbox. Is there any code that I left behind?
How can I databind from my xml file to my treeview?I didn't like my way of populating a tree view, coz of it doesn't go with my UI when I was creating an xml file then load it to the treeview...
View 3 RepliesI 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]....
I have a DataGridView that is inside a TabControl. After I bind the DataGridView with data, the first row is selected. How do I prevent this from happening. I tried DataGridView.ClearSelection and DataGridView.Rows(0).Selected = false. Neither of these options work. I think it has something to do with the tab control not being completely drawn before I call the methods. If I run this code from a button it works.
View 4 RepliesI am trying to add an attribute to a dropdownlist control to store a value returned for the database. This value is need to get a code once a selection is made on the dropdownlist;
I have tried the following:
ddlStatus.DataTextField = dsValues.Tables(0).Columns("Description").ToString ()
ddlStatus.DataValueField = dsValues.Tables(0).Columns("CategoryCode").ToStrin g()
ddlStatus.Attributes.Add("SysCode", dsValues.Tables(0).Columns("SystemCode").ToString( ))
ddlStatus.DataBind()
but the attribute is not bound to the control
How to apply databind, so that the recent updated value will be displyed instantly, as i press update button ?
Dim cmd As New Data.SqlClient.SqlCommand
Dim con As New Data.SqlClient.SqlConnection(constr)
Try
[Code]....
I'm trying to databind my repeater but so far not having any luck.I have two functions at the moment by following some tutorials/examples
HTML:
<ItemTemplate>
<tr class="row">
<td><asp:Label ID="TitleLabel" runat="server" Text=""></asp:Label></td>[code]....
My dropdownlist is set to databine like this...
dt = dal.FillDataTable(SqlConnectionString, "SELECT SQL Query Statement")
dropdownlist1.datasource = dt
dropdownlist1.datatextfield = dt.columns.item(0).tostring
dropdownlist1.databind()
This is turn populates my dropdownlist, when a user selects a value, it is then populated to the remaining textboxes on the remaining forms with a session call...
dropdownlist2.add(ctype(session.item("valOne"), String))
Through this session it populates the one value, is it possible to display the selected value but also include all other dropdownlist items in case they want to change thier selection?
I would like my website to allow users to download files which are stored as blobs on the database, the database holds fileID fileName and theFile. I have a grid view with two columns, fileName and a template column, which is databound to fileID and has a linkbutton. When the link is clicked it calls to a function which downloads the file. The function needs the fileID to download the file, how do I get the fileID bound to the selected linkbutton.
View 1 RepliesI 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]....
I have an AccessDataSource TestSummaryADS. I can easily view the results in a GridView or DropDownList by setting its DataSourceID property.
How do I bind a value from the results TestSummaryADS to the text of a label?
I'm just trying to populate labels on my page with results from the DB entry.
C# or VB.NET answers okay.
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.
Is it possible to BOTH set a comboboxes datasource AND databind the selected value?Ihave 2 comboboxes on a form that I want to populate with data from 1 table,ut I want the actual selected values on each of the comboboxes to come from separate columns n another datasource Right now if one combobox changes, so does the other if that makes sense.
Here's a sample of code:
'Bind DataSource
With cboYields
[code].....
Trying to set the start time of the Avalon DateTimePicker, but all I get is the current time.Anyone had any success with this control. FYI, I am stuck using .Net 3.0.[code]
View 1 Repliesi have a combobox in my form and i need to databind it from database i need to know is it posible to databind the combobox with image and text together like first show an image and than a text for each item.
View 1 RepliesI have seen other similar questions dealing with WPF Almost exactly the same but I can;tfigure this out in ASP.net. I have a Pages table with a parentpage foreign key and want to databind them to a treeview. In the past I have created a hierarchicaldataset from a dataset but would like to stay within the entities framework if I can
View 1 RepliesI 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).
View 3 RepliesI have been trying for 2 weeks now to get this program to work.I am using VBasic and MS Access 2007 in conjuntion with a software application.the Database has 2 fields
1) Text
2) OLE Object (.jpg)
when I try to preview the data inside the DataSet I can only get the text to come threw, but that isn't the problem...the problem is binding the data to a datasource and displaying the information.I cannot get the database to display the information in FIELD 2
Okay, so I have a Generic IList of custom objects that I want to use as a datasource for a repeater.
Dim productRows As IList(Of MyCustomObject)()
'fill list with data
rptResults.DataSource = productRows
[code]......
Here I draw the table data binding using this code :-
Dim ds As DataSet = New DataSet()
ds.ReadXml(mypath)
VisaDG.DataSource = ds
VisaDG.DataBind()
How to clear the VisaDG table after display it?
i am using .net 2.0 & a window application which is connected to sql server there is checkbox in the application. i want to bind the checkbox with database field which is bit type 1 or 0 please tell how to ?
View 4 RepliesI have an object, called 'PERSON' This person object has a title, firstName & Surname property as well as many other which are at the moment irrelevant. It also has a read only property called Fullname which concatenates the two or three parameters mentioned above depending on an optional parameter 'withTitles' passed over when you call PERSON.FULLNAME
PERSON.FULLNAME(true) <- Will add titles if there are any
PERSON.FULLNAME(false) <- Will give the name without the title
Public ReadOnly Property FullName(Optional ByVal withTitle As Boolean = False) As String
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I get an error: PERSON does not contain a property of 'FullName'. If I change this to any other property that does not take a parameter it works as expected. Now I'm guessing that the binding procedure can't handle optional or mandatory parameters for object properties, is this right? Is there a better way to do it? I thought about looping through the collection to add them manually but that kinda defeats the object of DataBinding!
