.net - Control Parameters In Asp.net?
Aug 8, 2011
I am using searching grid view using control parameters but in my code i search only text but not integer values. So i want to search integer values using control parameters please give a code..
My code is :
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="GridviewwithHighlightedSearch.aspx.vb"
Inherits="GridviewwithHighlightedSearch" MasterPageFile="~/Default.master" %>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolderMain" runat="Server">
<style type="text/css">
[Code]...
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Jun 16, 2011
We have been debugging a problem with serial communications with an embedded device on 115200 baud, Even parity, 8 databits and 2 stopbits. The problem: a lot of extra 0x00 are sometimes received from the serialport.
1) We build a real basic sample program that only handles the data exchange. It was completely build according the serial-port-vb.doc from msdn. It was build in vb.net 2010. So this was the most basic setup possible on the PC side. This simple tool clearly shows the datareceived event spitting out extra bytes.
2) We used a scope to look at the hardware bits/levels. No problems / differences seen between good and bad messages. No extra bytes visible that the serialport event send to our programm.
3) We tapped the serial communication and received no wrong data on the tapping system but still on the .net tool. Again the serialport datareceived event gave us many extra 0x00 bytes.
So our only possible conclusion is that there is a problem in the serialport component from .net. My question: Are there any know issues? Can I get in contact with a microsoft engineer?
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Nov 7, 2010
Is the Querystring present in the Url once the page has loaded? If so you should be able to easily parse it to get the values.The WebBrowser control has 2 events that you might want to look at
Navigated - occures when the control has navigated to a new document and has begun loading it or DocumentCompleted - which occurs once the document has finished loading.
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Nov 10, 2005
I'm currently invoking a function that takes ByRef parameters using Control.Invoke (which I notice specifies the Object parameter array to be ByVal) but the array of parameters I give it isn't updated by the function. Is this possible with VB.Net 2003 or must there be some error in my code?
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May 13, 2011
I'm writing a query to select all records that has any part of parameter. I have one table called Employees. Some people have name like this: John David Clark If the parameter is
[Code]....
I should be able to get result back as long as there's a match in the parameters. If I use Function Contains (q.FirstName & " " & q.LastName).Contains(employeeName), I will not get any result back if employeeName is "John Clark" Function Contains looks only for next words from left to right. It doesn't match a single word at a time. So that's why I used this in the Linq to SQL:
[Code]....
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Aug 30, 2010
I am getting error [07002] the # binded parameters < the # of parameters makers, i checked both parameters were perfect even though i am getting this error here is my code
[Code]...
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Feb 6, 2012
Basically Commands has Parameters and parameters has functions like Add, AddWithValue, and etc. In all tutorials i've seen, i usually noticed that they are using Add instead of AddWithValue.
[Code]...
since it saves my coding time. So which is better to use? Which is safe to use? Does it improves performance?
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Aug 6, 2011
is there a way to get the GET parameters and POST parameters in just one function or Collection in ASP.NET? Like using $_REQUEST in PHP? I'm using VB.NET.
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Dec 29, 2010
Here's my situation: I have a control with motion graphics (for the sake of simplicity, a 'video player' control) in my project. Think of a PictureBox with constantly-changing images. In front of this will sit a second control (such as a second PictureBox of the same dimensions). The topmost PictureBox will be drawn to in its Paint event.
I need to draw very few elements, and the bottom control is updated much more frequently than I need for this drawing. So these elements are drawn to the topmost control. Think of a news broadcast, where they have live video in the background, with a news channel logo, news ticker, and sometimes gradient visible in front.
I'm trying to create that 'foreground' control, and the closest I believe I have gotten so far is the following:
Imports System.Drawing
Imports System.Drawing.Imaging
Imports System.Drawing.Drawing2D
[CODE]...
The 'Opacity' property in the code above is a sort of "scaling factor." The image drawn to the top control may, in different parts of the image, have any alpha value from full transparent to a full 255. This 'Opacity' property is applied to the entire image being drawn, scaling the alpha values of each pixel.
See the following pictures for description:
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Aug 8, 2011
I've got a project in c# which is making use of another project written in vb.net. I am currently able to modify both.I've got a method in the VB project like:
Public Sub MethodName(ByVal param1 As String, ByRef param2 As String)
param2 = param1 + 1
End Sub
I am not able to call this method using the out keyword from C#:
public void CallOtherMethod()
{
string param1 ="test";
string param2;
provider.AddTransaction(param1, out param2);
}
Shouldn't the ByRef keyword in VB.Net have the capabilities of both "ref" and "out"?
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Mar 30, 2010
I have this function to retreive stuff from a database. I don't know how to send SQL parameters to the database from VB.NET in combination with using SqlDataAdapter instead of DataReader. Help?
Public Function GetCountriesTable(ByVal continent As String) As DataTable
''----------------------------------------------------------------------
'' TODO: Risking SQL injections here?
[code]....
The line "query" doesn't look good to me. Is this where I'm opening up for SQL injection attacks?
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Mar 25, 2011
I want to set control position relative to other control so when i make one control hide then other control move up like this.
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Nov 26, 2010
problem with AddHandler with parameters.
i've create a control, here is the code:
Public Class myWorker
Public Event Complete()
[code].....
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Jun 3, 2012
A fast-food vendor sells pizza slices ($1.75), fries ($2.00), and soft drinks ($1.25).Write a program to compute a customer�s bill.The program should request the quantity of each item ordered in a Sub procedure, calculate the total cost with a Function procedure, and use a Sub procedure to display an itemized bill. A sample output is shown in Fig. 5.26.Coded it out but when I try to break it down to separate functions I keep getting:
Error1Argument not specified for parameter 'CalculateFries' of 'Public Function CalculateTotal(CalculatePizza As Double, CalculateFries As Double, CalculateSoft As Double) As Double'.
Error1Argument not specified for parameter 'CalculatePizza' of 'Public Function CalculateTotal(CalculatePizza As Double, CalculateFries As Double, CalculateSoft As Double) As Double'.
[code].....
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Oct 16, 2009
Here is the problem I'm working on.A fast-food vendor sells pizza slices ($1.75), fries ($2.00), and soft drinks ($1.25).Write a program to compute a customer�s bill. The program should request the quantity of each item ordered in a Sub procedure, calculate the total cost with a Function procedure, and use a Sub procedure to display an itemized bill. A sample output is shown in Fig. 5.26.Coded it out but when I try to break it down to separate functions I keep getting:
Error1Argument not specified for parameter 'CalculateFries' of 'Public Function CalculateTotal(CalculatePizza As Double, CalculateFries As Double, CalculateSoft As Double) As Double'.
[code]....
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Dec 13, 2010
We know some functions in dll files and can use them but if we haw a dll file and dont know functions names. is there a way to get the functions name and their parameters
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Jul 20, 2009
i want to get all available midi device by name. i found this: Declare Function midiOutGetID Lib "winmm.dll" (ByVal hMidiOUT As Integer, ByRef DeviceName As String) As Integer
but: how do i get these informations now?
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Jun 11, 2009
I have a function that accepts a list as the parameter and creates a CSV from the passed list.Currently, the List parameter is of type String i.e.Public Function GenerateCSV(ByVal Source As List(Of String)) As String..My question is, is there a way I could modify the parameter such that it accepts a list of any known type i.e either string, integer etc instead of forcing it accept of type string as I have done above?
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Apr 17, 2011
I need to get the customer name from the user as in combo box when the user selects the user I want that selected customer name should be searched in the sql table (here table name is "obbalance") and all the entries in the table having the name as the selected customer naem it should be shown in the data grid view
cmd.Parameters.Add(New SqlParameter("@p1", SqlDbType.NVarChar).Value = ComboBox1.SelectedItem.ToString)
cmd = New SqlCommand("select obbalance from balance where custname=@p1", con)
dr = cmd.ExecuteReader()
Form2.Show()
After this also it shows a error. It shows error in declaration.
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Nov 27, 2010
If I want to use a FolderItem verb like 'Copy to folder', then I have to somehow supply the name of the folder to which I want the object copied. How is this done. I dont understand how msdn can be so minimal on examples.
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Mar 8, 2009
Okay, I know how to launch a file with its associated app:Process.Start("File.mp3")And I know how to launch an executable: Process.Start("program.exe")This is the best I've been able to come up with for starting an executable with parameters:Process.Start("program.exe", "@ 'List of command line parameters'")Will that work?
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Mar 4, 2010
What's wrong in here, I always get some nasty errors even if the same code that I used earlier works. But when I apply it to other form it gives me the error above.
here's my code:
Imports System.Data.OleDb
Public Class Updater2
Public adminID As String
[Code]....
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Feb 27, 2011
I'm trying out something with my Access db and gets this recurring error message: "No value given for one or more required parameters", even though there is no parameter in my query. Here's my code (By the way I am using Northwind DB):
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
strSQL = "SELECT CompanyName FROM Customers"
Dim con As New OleDbConnection(strCon)
Dim cmd As New OleDbCommand(strSQL, con)
[Code] .....
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Nov 9, 2011
I've been assigned to build a windows service that is capable of launching a proccess into the current interactive user, using VB.NET 2005.
After some research, i've built the following code:
Dim hToken As IntPtr = IntPtr.Zero
Dim LastW32Error As Integer
[code].....
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Sep 5, 2009
I'd like to pass a parameter on the startup of an application, and use it in my code.
Such as passing parameters in C# using the (String []args), then referring to them by args[i] for some i.
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Jan 17, 2010
I'm trying to learn VB and don't understand what is wrong with this code?
Private Sub ScoreRange(strStart as String, strStop As String)
Dim MyCell As Range
For Each MyCell In Range(strStart & ":" & strStop).Cells
[code]....
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Jul 12, 2011
I'm in the process of upgrading asp code to vb.net but there is a vbscript which is used to validate each user that I can not convert so I want to pass it a paramater and run it and then retrieve the boolean variable created. But I don't know how to run a vbs file.
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Feb 28, 2010
I managed to open a program from the start>run (commandline) and pass parameters. I write "C:myprogram.exe" parameter1 parameter2 etc.. in my program I retrieve it using the enivroment.getcommandlines(). This works fine, however when I try the same command in a url I only get the the path "C:myprogram.exe" and not the parameters.
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Mar 12, 2009
I am trying to create a DisplayAverage sub procedure that accepts 3 integer numbers as parameters. This procedure should find the average of these 3 numbers and display the numbers along with their average in the list box.
Private Sub btnAverage_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAverage.Click
Dim a As Integer = CInt(txtone.Text)
Dim b As Integer = CInt(txtTwo.Text)[code].....
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Oct 26, 2010
The following query gives me an error;"Incorrect syntax near the keyword 'WHERE'...
query = "UPDATE gprdsql.TblCollections SET system_time = @system_time,"
query = query & "WHERE col_uid = @col_uid"
cmd = New SqlCommand(query, conn)
[code].....
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