Checking Return Of Objectdatasource.select()?
Jan 17, 2010I just wonder if it is possible to simply check if the objectdatasource.select() returns any rows?e.g.
If ObjectDataSourceM.Select().GetEnumerator Is Nothing Then
'..
End If
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Asp.net - ObjectDataSource.Select() Not Always Firing On Page Postback
May 15, 2012I have a form with:
[Code]...
Whenever I change the value of MyTextBox and press MySubmitButton, the select method of MyObjectDataSource is invoked and everything works OK. But if I change the value of any of my check boxes (without changing the value of MyTextBox) and press MySubmitButton, the select method is not invoked, thus the "MyObjectDataSource_Selecting" event doesn't take place and I get the same results as before.
One way I found to work around this was to explicitly invoke MyGridView.DataBind method whenever MySubmitButton was clicked. Is this the best way to handle these type of parameters? What I am afraid is that this may cause the select method to be called twice making the page slower.
Checking If A Port Is Open - If It Is Open Then Return True, If It's Closed, Return False?
Dec 28, 2010I'm making a Visual Basic GUI application to display whether a number of my ports are open for people to know whether things like my website and my Minecraft server are open.My problem is I have absolutely no idea how to do this in Visual Basic.Basically, I'm asking for something which sends a signal to an IP with a specific port, if it is open then return true, if it's closed, return false. Similar to: http:[url]....
View 1 RepliesChecking For Null Return?
Nov 14, 2011ve a simple vb code similar to the below,
Function getvalue (ByVal Val as double) As string
Dim Num as Integer
Dim Prd as double
[code].....
Methodinfo.invoke Return Type Checking?
Apr 14, 2009gv1 is a grid !!
gv1.DataSource = minfo.Invoke(Activator.CreateInstance(classtype), inputParameterStore)gv1.DataBind()
What i get from minfo.invoke i am binding to the grid gv1 !!! But unfortunately its not working for all minfo !!!! Few errors are like :
return type is not IListSource ,IEnumerable or IDataSource !!!!
Hence i need to check if :
minfo.Invoke(Activator.CreateInstance(classtype), inputParameterStore)
returns IEnumerable or IData Source or IListSource !how to do that ?Also if return type is none of these i should display the result in a Textfield by Serializing the data and displaying it as an XML?How to do that too?
Checking The Return Code Set By A Task / Thread / Process / Program?
Apr 16, 2010A long time ago, on a PC far, far away from Windows, one MS-DOS program (the father) could run / execute / spawn another MS-DOS program (the son). When the son terminated, it could set a return code which could certainly be interrogated by an MS-DOS batch program or, I think, by any father program that invoked it (depending on the language in which that program was written). I have a small utilility which I want to invoke from my application, and, since that utility sets a return code, I would like to interrogate it in my application when the utility terminates. I've looked through the MSDN Library but could not find anything that seemed to cover this situation. Is there a way to do this in Visual Basic 2008 Express
View 2 RepliesAdd CheckBox To GridView And When Checking Select Data Items?
Feb 8, 2011How can I add check box to gridview and when checking select data items?
View 3 RepliesAdd A Loop To Allow Repeated Checking Of ISBN Numbers And Select Case
Oct 16, 2009I need to add a loop to allow repeated checking of ISBN numbers, which should check to determine when processing should be ended and should allow exiting the program without having to enter an ISBN before quitting. I also need to use a Select Case for the three ISBN possibilities (ISBN-10, ISBN-13, invalid ISBN length).
[Code]....
Asp.net - SQL Select Return Value To Variable
Sep 14, 2009working with: ASP.net using VB.net connecting to MS SQL Server
What I'm trying to do is take the result of a SQL select query and place that in a string variable so it can be used in things like a textbox or label. code so far that doesn't work...
Imports System.Data.SqlClient
Partial Class dev_Default
Inherits System.Web.UI.Page
Protected Sub form1_Load(ByVal sender As Object, ByVal e As System.EventArgs)
[Code].....
DataTable.Select Return Row Index
Mar 20, 2009I understand that DataTable.Select() returns an array of rows. I just want to know whether these is a way to get the row indexes as well.
View 4 RepliesVS 2008 : Select * Statement Return Nothing?
Dec 10, 2011I am developing a code to open up a .dbf file and append data to a access database.Here is my code for opening the .dbf file.
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim constr As String = "Provider=VFPOLEDB.1;Data Source=F:JUNO4.dbf;Persist Security Info=False;"
Dim con = New OleDbConnection(constr)
Dim da = New OleDbDataAdapter("Select UNIQUE_ID FROM JUNO4", con)
[code]....
this code gives an empty datagrid.
Xml - Can't Get Datatable.Select To Return Any Rows
Mar 17, 2012I have the following code that loads an XML file into a datatable (I went this route because I do not know how to query XML directly). I want to use the Select method to return a row where "age = 72". However, I can't seem to get this to work. Also, if there is a better way to search through a datatable for specifc values that would not require iterating through the whole table to get the results
Imports System.Xml
Module Module1
Sub Main()
[Code]....
IDE :: ObjectDataSource X64 Bug?
Jan 26, 2012Original project is VB, but did other testing in Web Developer.Essentially, when a project is compiled as x64 in the ".inx64" directory, "Choose a Business Object" ends up being empty.My workaround was to go into the project's properties and change the compile directory from ".inx64" to just ".in".
View 4 RepliesReturn The Rows From Datatable Using Select Method?
Nov 22, 2011I'm having the datatable with three columns, i need to return the rows in which the third column having the null values.
ie., I need to do like this below mentioned coding,
Dim rows As DataRow() = ds.Tables("Tablename").Select("col3 is null")
Is it possible? if no, anyone tell me the way to get the results.
Return A Total Of A Column In An Access Database Using SELECT Sum()?
Apr 15, 2010I don't know if this is the best way to do it or not but here goes.I have an access database and a datagridview and they link via a SELECT statement at runtime.I want to total one column named LNLMTS and display the result.I am looking at using SELECT Sum LNLMTS FROM tblProduction WHERE SO=@so AND DATE=@date
View 8 RepliesStandard SQL SELECT * FROM TABLE Return Syntax Error?
Mar 30, 2011I keep getting an error saying "there is an error in your sql syntax." when i use this sql statement:SELECT * FROM gsm_oceanwide_integrationEDIT:To put this in context heres the code im using this query statement in (VB.net):
Dim con As MySqlConnection = New MySqlConnection("Data Source=" & frmLogin.txtserver.Text & ";Database=stratocast;User ID=" & frmLogin.txtusername.Text & ";Password=" & frmLogin.txtpassword.Text & ";")
[code]......
C# - Use Multiple Objectdatasource In Detailsview?
Nov 14, 2011Just want to ask, can we use multiple objectdatasource in detailsview?
Example, i have 2 different tables with same fields.
Insert, Update much work properly.
.net - Modifying ObjectDataSource Deleting Parameters?
May 26, 2011I am trying to add a parameter to the deleting event of an ObjectDataSource as in the example below from msdn. I generated an event handler for the ObjectDataSource's deleting event, and it had the same signature as in the example, however, when I try to clear the paramsFromPage as in the example, I receive an error stating that
View 1 RepliesUpdating Custom Objects With ObjectDataSource?
Mar 7, 2011I am using VS 2010 web application projects
I have an object datasource connetced to a custom object. The data from objectdatasource is displayed
in the Formview. When i try to do the Update. It sends me two empty objects of the class.
This is my objectdatasource
<asp:ObjectDataSource ID="obj1" runat="server" SelectMethod="GetValues"
TypeName="CustomDAL" ConflictDetection="CompareAllValues"
UpdateMethod="Edit" OldValuesParameterFormatString="old_{0}"
[Code].....
Sql - .NET Using A SELECT Statement To Return A Row Where A DateTime Column = Variable Of Type Date?
Jun 20, 2011I am using OleDb, trying to do this:
Dim d as Date = DateSerial(Year(rptDate), Month(rptDate), 1 - 1)
Dim conn as OleDbConnection = new OleDbConnection(connStr)
Dim cm as OleDbCommand = new OleDbCommand()
[code]....
I know that d is the same date as the one in SQL server, specifically 3/31/2011 12:00:00 AM.
Building A ASP.NET Profile Wrapper To Use With An ObjectDataSource Control?
Dec 26, 2011building a ASP.NET profile wrapper to use with an ObjectDataSource control. I would like to have the serialized profile data that I have defined in web.config be accessible via a FormView control within a user control. I'd like the users to be able to view and update their profile data. I have part of the code but am lacking the experience to complete it. I'm using a aspx page with some text boxes and having users update via a simple form now but I need something more reusable and efficient, not to mention moving the logic to a middle tier. I see that the ObjectDataSource control has some intrinsic ability to view profile common data but that seems to be limited.
Namespace SiteMemberShip
Public Class ProfileWrapper
Private FirstName As String
Private MiddleName As String
[code]....
IDE :: Pass Parameters To Stored Procedure Through ObjectDataSource?
Jun 7, 2007I am building a three tierd app, and therefore have all my data access methods in a class by itself.This class only calls stored procedures, basically, I need to pass in the following:
1) stored procedure name as string
2) parameters as IDataParameter() -- an array of parameters
3) other fields ( not important to this discussion)
If I use a GridView on my web form and choose an ObjectDataSourceObjectDataSource, and then choose my business object and method, since the method is a call to a stored procedure with a parameter array, I don't know how to pass it values in the IDataParameter format.The Method Signature listed on the wizard is "RunSP(String spname, IDataParameter[] params), returns SqlDataReader" which basically is calling a method called RunSP with two parameters, of which the second parameter is a parameter array for a stored proc.
Return The Number Of Records Processed From An Sql Procedure Whether It Is A Select Or Update/insert Query?
Nov 25, 2009how can i return the number of records processed from an sql procedure whether it is a select or update/insert query and how can i receive it in the calling method in vb .net.
View 4 RepliesSelect A Range Of Non-Contiguous Cells In A Column, Then Return The Address Of The Last Active Cell
Jan 4, 2011With an excel file opened, i'm trying to:
Select a Range of Non-Contiguous Cells within a Column, then return the address of the last active cell.
Below, is what I have so far: Note the section maked:
' I can't get the next bit to work: '
To make it work, so far :(
1. Create a new Project using VS-2010.
2. By default, the form should be displayed as "Form1.vb".
3. Add a Label (No need to name or set anything).
4. Add two buttons (Again, No need to name or set anything).
5. Double click on the Form...
6. With the form code displayed, Select all, then paste the following.
'Option Strict Off
'Option Explicit On
Imports System.IO
[Code].....
C# - Using ObjectDataSource And DataObjectTypeName - Handle Delete Methods With Just An Id Parameter?
May 27, 2009If I have an ObjectDataSource setup like:
<asp:ObjectDataSource
ID="ObjectDataSource1"
runat="server" [code].....
How do I get the objectdatasource to use the Delete method with the parameter that is not an Employee object? what is the recommended alternative architecture?
Edit:
To clarify, I want to use the method signature on my data/business object as shown above, however if I try to allow an Employee object to be passed into some of the methods using DataObjectTypeName, then I seemingly lose the ability to have some methods take just an integer id for instance.If I do not use the DataObjectTypeName, then I have to place all the method parameters in the ObjectDataSource and change the methods on the data/business object to match, this seems like a bad design choice because as the Employee object changes I will have to update each of these methods.
Getting The Selected Row From A FormView Bound To ObjectDataSource In The ItemUpdating Event?
Oct 16, 2010I have to maintain an ASP.net application in VB.Net.There is a page with a FormView bound to a ObjectDataSource.I have to add some business logic on the ItemUpdating event of this FormView.Unfortunately, some the data that I need to add this business logic is not exposed on the FormView user-interface itself, so I can not use FindControl to get the values (I could add the controls, bind them to the fields I need and set their visible property to true, but that's ugly).
View 2 RepliesAsp.net - Pass A Value To From Listview Item Control To Another ObjectDataSource Inside In The Same Place?
May 8, 2011i have to list views A,and B listview B is inside listview A. i want to pass some parameters from Listview A to Listview B's ObjectDataSource.
View 1 RepliesSelect Multiple Objects Like Checking Multiple Checkboxes?
Nov 24, 2010Is there a tool in the toolbox that i can use that replaces checkboxes. i have limited amount of space and checkboxes just keep taking up room. I need the user to select multiple objects like checking multiple checkboxes.
View 5 RepliesVS 2005 - Boolean Checking - Better Performance By Checking For A True Value
Aug 4, 2010Is there any better performance by checking for a true value like this:
[CODE]..............
Than like this:
[CODE]..............
Forms :: User To Be Able To Select Any Number Of Those Checkboxes/rows And Then Return A Value To The Table "stamping" That Users ID?
Jan 8, 2010I'm working on a project and my boss insists I use a DataGrid for this. The grid holds information for work orders, one of the cols has a check box in it. I need the user to be able to select any number of those checkboxes/rows and then return a value to the table "stamping" that users ID. This is what I have so far to get the grids populated... I'm using 2005 with a 2000 Access Database if that helps. Though this will be changed to SQL Server once we get it working (yay more work)...
[code]...
I removed the code from the second grid to make it easier to read, obviously once I can get one to work the second shouldn't be as much trouble.
This is the check box: dgvNewBiz.Columns(1).HeaderText = "Select"At this point if someone knows how to get it to recognize the click event of the check box and pass that row info to a variable that would be super as I'm sure I could probably figure it out from there.