I have an array of objects I get from a web service. The 1st element in that array is meant to be displayed in a asp.net literal control. The rest of the elements are meant to be bound to a gridview.
View 1 RepliesI have a simple VB.Net Form that acts as an interface to a control library with a public API.
One of the API calls takes an Array of UIntegers ByRef:
Public Function Get_Values(source_id As Byte, first_value_address As Byte, number_of_values As Byte, ByRef valuesOut As UInteger()) As Integer
After the call, valuesOut will hold a list of values number_of_values long from source_id starting at first_value_address.
There is a hardware driven limitation that the max number of values returned is 15 regardless of requested length. I need to get 28 values into an array from my VB.Net code.
Is it possible to send only part of an array variable to the function similar to this C code?
uint[28] values;
Get_Values(0, 0, 15, values);//get first part
Get_Values(0, 15, 13, &values[15]); //get second part of data
I have the following in a .Net 2.0 app:
Private chequeColl() As Cheque
For i = 0 To m.Length - 2
chequeColl(i) = New Cheque()
[Code]....
I now want to make chequeColl only contain those items where Status is not equal to 41. In LINQ this would be easy but I can't think how to do it.
I cannot use the .Net 2.0 LINQ bridge products, I have to do this the old school way. At the end of it chequeColl must only contain those items that are not status of 41. I cannot have empty elements.
Algorithm to count the time that occured on the same period, how to bind the dictionary to the GridView? Pls take a look to the answer.
I tried to add a GridView and then on the code-behind: GV.DataSource = timeRangeCounts and bind it, but in return:
The data source for GridView with id 'GV' did not have any properties or attributes from which to generate columns. Ensure that your data source has content.
take a look at the code below:
The first helper class is used to hold the counts of exact and sub range matches:
Public Class TimeRangeCounter
Property ExactRangeMatch as Integer
Property SubRangeMatch as Integer
[Code].....
I am trying to bind a SQL XML field to my gridview. [code]...
View 2 RepliesI have bind the DataGridview with DB. To add the data from textboxes to DataGrid, I use the foll. code-
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Try
Dim row0 As String() = {TextBox1.Text, TextBox2.Text, TextBox3.Text}
[CODE]...
Error is coming: Rows cannot be programmatically added to the DataGridView's rows collection when the control is data-bound. there is no any way to add data to the Gridview if we bound it to the Database.
If I have the following ASP.NET code (it's not complete - obviously there's a lot missing, but none of it matters):
<asp:GridView>
<Columns>
<asp:TemplateField>
<ItemTemplate>
[code]....
How can I bind the GridView so that one row is equivalent to one item in my MyListOfObjects list, and so that the data will populate and persist across page loads or postbacks? I've never done custom databinding like this before, so a full explanation would be very helpful. All the tutorials I've come across so far only talk about using GridViews directly with Database query results, and that's not what I need.
I have a Master Page with nested pages in ASP.NET. Fairly simply I want to databind some hyperlinks to a gridview for the master page. This however is throwing a null reference exception when I try to set the DataSource.
I tested the code on a separate page and it works as expected. When debugging I can see the Page_Load Sub hit twice, I don't know if this is the cause I have one nested page being loaded, this is a blank page at the moment
EXCEPTION
Object reference not set to an instance of an object.
MASTERPAGE CODE BEHIND
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
[Code]....
I have a variable defined as follows:Dim iRows As List(Of String())I've also been converting that to a list of lists just to make it easier to work with.Dim iRows As List(Of IList(Of String))I would like to bind that list to a GridView using the contents of the nested array/list to dynamically define the columns. I don't know ahead of time how many columns there will be, but I do know that they are all the same throughout the list.
View 2 RepliesI have radio button list in a gridview that needs to be bound to a column. If the value in a column is 0, the first radio button is selected, if 1, the other is selected. This is the code, some of it is partially removed because it is not necessary
[Code]...
So in this gridview, there is a column for status and I want to have a drop down list with Pass, Pending, Fail appear when the edit button is clicked. These values are already in a table, so I need to somehow bind from this table to each ddl for every row.Here is the column from the gridview. As you can see, I would like to just have a label showing when not in edit mode, and a ddl when the edit button is pressed
<asp:TemplateField HeaderText="During Production Status" SortExpression="DuringProductionStatus">
<EditItemTemplate>
[code]......
I was assigned a task so as to bind the user related data into a grid view on user login. I have got two web pages, one of which contains Login and authentication information. This goes fine. When user was redirected to second page, I need to provide a GridView control where user details should be automatically updated in grid view control in the back ground.I have three different fields which were saved in sql table. particular user details need to be retrieved from the sql table on user login and bind the data to grid view automatically.
View 1 RepliesI'd like to partition my search results (which is in a DataTable) into groups of say 100 so the user navigates through them a chunk at a time.I thought I could bind an array of DataRows to a DataGridView as the DataSource but it just does not work. This is the code I tried
DataGridView.DataSource = (From r In DataTable.Rows Skip 200 Take 100).ToArray()
I'd like to stay away using the DataGridView's VirtualMode.
I have a form called studentForm which has a studentCombobox, studentTextbox and a studentDatagridView
In the constructor of the studentForm I need to bind studentCombobox to the StudentbindingSource of the main form and to bind studentDataGridView to appropriate binding source in the mainForm.So that this datagrid view displays all the bookings for the studentID currently selected in studentComboBox
studentComboBox.DataSource = MainForm.StudentBindingSource
studentComboBox.DisplayMember = "StudentID"
studentDataGridView.DataSource = MainForm.StudentDataSet
studentDataGridView.DataMember = "Names "
This is the code I wrote in the constructor
I need to write a program that allows the user to input student's names (in textbox) and their studentID (using array) and searching (by name and id). the list of the student data should display in a gridview.
View 1 Replieshow to achieve what am trying to do below. am trying to have a set of numbers in different list into and array. so i can select any list in the array as random and get the values in the selected list.
Dim list1 as New List(Of Object)
Dim list2 as New List(Of Object)
'adding items to list 1
[Code]....
<asp:GridView ID="gvNames" runat="server"
OnRowDeleting="gvNames_SelectedIndexChanged"
AllowSorting="true"
[Code].....
I want to bind a multidimensional array to gridview, but it display the following error when running "Gridview1.DataBind()"
"Array was not a one-dimensional array."
The following is my code:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
CreateArray()
[Code].....
I am trying to bind my SQL param's qurey to bind to a table. My problem is i get this error "Fill: SelectCommand.Connection property has not been initialized."
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
If RadioButton3.Checked = True Then
Dim connectionGrid As SqlConnection = New SqlConnection("Data Source=BST;Initial Catalog=dsfs;uid=dfsdf; pwd='dsfsf'")
Dim commandgrid As SqlCommand = New SqlCommand()
[code]....
I need to have the following : (name1 + "a") + (name2 + "a") + ...
Dim separator() As String = {"|"}
myString.Split(separator, StringSplitOptions.None).SomeLinq(...)
I don't know what to add at the end to add an "a" to each element...
I have an arraylist that holds a subset of names found in my database. I need to write a query to get a count of the people in the arraylist for certain sections i.e. There is a field "City" in my database from the people in the arraylist of names I want to know how many of them live in Chicago, how many live in New York etc.
how I might set up an sql statement to handle this. I think somehow I have to pass the subset of names to sql somehow.
Here is a sample how I am writing my sql in my code
Public Shared Function GetCAData(ByVal employeeName As String) As DataTable
Dim strQuery As String = "SELECT EMPLID, EMPLNME, DISP_TYPE, BEGIN_DTE FROM Corr WHERE (EMPLNME = @name)"
[Code]....
I need a way to create a function using your sql statement to return a datatable object of names and the parameters would be city, and the List of names.
The above example isnt the sql I am looking for its just a skeleton of what the function would look like that I want to create.
So then you would use the function by iterating through all the cities passing in the same set of names each time in the fron end.
I have a list and I need to output each subset of the list for example a b c d e would output to
[Code]...
I believe the correct term is combination no element should be duplicated on the same line I was going to attempt this with a series of loops but im not even sure wehre to start
I am working with the MP3IDV1 class from this link: [URL] I am pulling the ID3 tags from music files, and this class returns the Genre in number form. However, it has the property Genres with that entire list.
Public
Enum
Genres As
[Code].....
I have a DataTable that I need to get a subset of into another DataTable to bind to a control. Is there an easy way to do this?
View 4 RepliesIf I have code like this (C# or VB.Net does not matter)
Dim e As IEnumerable(Of XElement) = _
From s In _dataSourceSettings.Elements _
Where s.Attribute("name").Value = toInsert.Attribute("name").Value
If e.Count > 0 Then
e.Remove()
End If
How do I get now new _dataSourceSettings without element that I removed?
I am working on a function that returns an array of variable-length strings that have a certain starting and ending delimiter. The input to the function is a string. I am able to do this by using if-then statements with InStr(). I was wondering someone knew of a more elegant way. I tried using the split command but I am splitting on one delimiter so I don't really get the result. I could then parse from the results but I am back to the same boat with using InStr().
[Code]...
I have to set GridView.DataKeyNames(This is really a question about the syntax for a string array, in VB.Net.)I am discovering the PrimaryKey columns names from within a loop, ie:For Each fld As IEntityField In Me.llbDataSource.EntityCollection(0).PrimaryKeyFields'fld.Name ' this is where the column name is stored, so I have to get this into an array Next..[code]So, basically, how does one declare a string array (as required by GridView.DataKeyNames), and then populate the elements of the array from within a loop?
View 3 RepliesIs there a way to get a subset of Unique values in column(1) of a DataView?
View 6 RepliesI have populated a dataset from a text file and I can display it in a dataview. Can I and if so how do I, select a sub set from this dataset and display it in the dataview?
View 4 RepliesThe program is to take an entered string then search for a subset of letters entered through and input box.In my subprocedure Sub btnSearch_Click I am using a loop to move through the entire length of an entered string to search for a set of letters entered through an input box. I can find the set of letters to search for but instead of increasing my counter "Found" for every instance of a match it returns the length of the string instead. I just don't know why the IF doesn't prevent the counter from increasing for every element in the string. I want the counter to increase only when the match is found. I just put 2 message boxes in there to make sure it found the right letter and then display the counter.
Here's the entire
' Name: Count Project
' Purpose: Displays the number of times a sequence of characters
' appears in a string.
[code]....