VS 2005 - Data Reader (Show And Next Buttons)
Dec 24, 2009
I have two buttons: show button and next button. I want the show button to show the first result and then for every click of the next button, I want to go the the next result. I did this code for the show button:
cmd.Parameters.AddWithValue("@sex", TextBox4.Text)
dr = cmd.ExecuteScalar
If dr.HasRows Then
While (dr.Read)
TextBox1.Text = dr(0)
[Code] .....
Now the number of rows returned is 5. But on clicking the show button I can see only the last row in the textbox's. Then how to see the first row by clicking the show button? And how to see all rows one after another by clicking the next button? I need to use:
dr.NextResult()
to loop through the fetched data. But I cant place it properly in the next button code. How to do the code for show and next button to get the desired result?
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Aug 18, 2009
I have a show button.The user will select a data from the dropdown list of the combo and on clicking the show button the corresponding data will be fetched from the database and will be shown in the corresponding fields.So I did this
Private Sub Show_Btn_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Show_Btn.Click
Using connection As New OleDbConnection("Provider=Microsoft.Jet.Oledb.4.0;Data Source=BankAccount.mdb")
connection.Open()
Dim command As New OleDbCommand("Select * from BankAccount", connection)
Dim reader As OleDbDataReader = command.ExecuteReader()
[Code]...
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Jan 22, 2009
I have a form that has some combo boxes in it, and a table in SQL Server that stores the Values for the selected item for the combo box.I have read the data out from the combo box and inserted it into the SQL table as a integer. Now I want to read it back in to the form.
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Sep 7, 2009
result = MessageBox.Show("Want to Update record?", "Information", MessageBoxButtons.OKCancel) I want to perform some action if the user press the ok button and again a few action if the user press the cancel button......But i cant do it:
[Code]...
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Mar 8, 2012
I'm using stream reader to read some text(txt format) n show in textbox1. I want stop at the second last line to get the string.Below is my code:
path="c:dic.txt"Dim reader As New StreamReader(path)Do While reader.?? //how to instruct to stop when read until second last line,because i don't know how many lines in the text file??
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Sep 1, 2010
I have 7 Windows forms.The order of the forms is defined within a configuration file.I want to place buttons on each form that will show the next available options.The Next button will move the next form in the list.The Back button will move to the previous form in the list. The Finish button will execute the final piece of code.The Cancel button will exit the application.If the user is on the first form, then there is no Back button.If the user is on the last form, then there is no Next button, but there is a Finish button.
Example 1:
Form1 - Next, Cancel
Form3 - Next, Back, Cancel[code]....
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Jun 8, 2010
I have loaded the rows data of a datagridview into a datatable object but I am not aware how to show them in crystal report.
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Oct 29, 2009
I am importing a .csv file into a data set / data table and then into a data grid view. I need to show decimal position for whole number.
[Code]...
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Jan 20, 2009
Is there a way to have the data grid view show the colum names as rows and then the data would be in the colums?
I know I can do it in asp. But cant figure out how to swap the 2 around for display purposes in VB.
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Nov 27, 2009
I am a student and I am about to make a program that will use a barcode scanner well ofcourse to scan a barcode. My problem is i don't know what library to use and what certain things i need to do so that when i am going to scan a barcode it'll be something like show it on a textbox and pull something from the database. i've actually research some. i've seen mscomm1 (not so sure about that) and POS for .net (haven't fully understood its use) were those will help me develop my program?
i have a metrologic ms9520 Voyager barcode scanner. and i am going to create a program for it in vb2005.
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Sep 9, 2009
how to pull/fetch data from SQL DB using Data Reader and loding to XML file.
After that I will have write code to read XML file and download to CSV file and Test files.
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Mar 21, 2010
can data reader be used as a data source for a grid control?
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Jun 17, 2011
how to connect barcode reader device into visual studio 2005? My device model is acanlogic cs-2030?
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Oct 19, 2010
From few days I am doing efforts to read web pages using webbrowser control in my desktop application. But it is very slower than my expectations(because I want to read lots of pages in minutes and browser control reads almost one page in 5 to 10 seconds), what I need is to read two or three tags written in web page.
So finally I decided to use something, which can give me only source code of page. I think StreamReader will help me to read it. I am not sure if it is flaxible with my purpose, or something else is there which can give me only html source code of web page.
I have written this code to read html code, but it gives error.
Quote:
System.ArgumentException: URI formats are not supported.
public static string Navigate(string URL)
{
[code]....
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Feb 2, 2010
a text document containing information as:In/memory of/wendy/smith 6th of march 1545/ foreever in our thought/love liz and pony/i`ve got to develop a software in vb that will read the text file above and extract names, date.for each inscription it is required to display on a computer screen, IN TABULAR FORM, the details mention above.
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Oct 19, 2010
I'm making a browser and for the favorites I'm using a reader and writer to read and write new favorite to a .txt file. Now if I edit the text file manually and load up the browser, the favorites show up as they should but the problem comes in when I add the a new favourite and then reload the application. Once reloaded the favorites seem to copy what was originally in the file and then whatever I added last at the bottom.
Here is the
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
WebBrowser1.Navigate(TextBox1.Text)
ListBox1.Items.Add(TextBox1.Text)
[Code] .....
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Dec 6, 2010
I have a program that reads a text file tab delimted using OLEDb .I need to be able to allow the user to insert a user created record into the file which I can do.
The problem is I need to be able to let the user edit that record. From my understanding you can not edit or delete with OLEDB only insert So I thought I would read the file using stream reader, find the line I want to edit and just delete it, rewrite the file, then let the user insert a new record
If someone has a better way to perform this operation I am open its just the best way I could find with my limited knowledge and the reading and researching I have been doing thus far.
So I am trying to step-by step and first read the file which seems to work then find the line that would need to be deleted. So I was trying to use the
line.startswith method. I am using msgbox to see if that works before I continue but it doesnt seem to work I know my file has several lines starting with "Active" but my msgbox returns "False"
Here is the code I have so far
[code...]
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Sep 5, 2011
how to connect barcode reader device into visual studio 2005? My device model is acanlogic cs-2030?
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Jun 15, 2009
I have a data reader "dr " that returns a row fo data, Assume dr returns values of 6 columns I need to create an instance of DatarRow using "dr", so that later I can create a collection of datarow objects that I will be adding to a table. However, how do I create a DataRow using dr object?
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Jul 26, 2010
I have a Rectangle (the class) that I'm using to define a region on a form and when the mouse enters that region it shows 2 buttons (which are on the form and within the bounds of the rectangle) and I would like the buttons to remain visible when the mouse is over either of the 2 buttons then when the mouse leaves the region or leaves the form they are set to invisible again. Here's the code I have so far:
[code]....
The problem is when the mouse enters the bounds of the button, the form's MouseLeave event fires and thus my buttons are hidden which means the user can't click either of them either.
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Oct 7, 2011
Currently i am using this code
[Code]...
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Jul 24, 2010
How do I really use data reader in vb.net. I'm using odbc to connect mysql and vb.net. Function I declared on a module:
Public Function form2search(ByVal drugname As String) As OdbcDataReader
cmd.CommandText = "SELECT * FROM drug WHERE Drug_name LIKE'%" & drugname & "' "
Return cmd.ExecuteReader
End Function
[Code] .....
I see a result, but it only loads the first item on the database. I've put this code in the text_changed event. What's the proper way of doing this? And what's wrong with the 2nd code, why is it only loading the first data. As you can see the con is the module where I declared the function. Then I created an object of it in the form.
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Nov 30, 2010
I have a form with two group boxes. The first one has two radio buttons and the second has four. The user chooses one button from the first group box and one button from the second which gives me eight selections and I would like a different picture for each selection.
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Jul 26, 2010
I have a Rectangle (the class) that I'm using to define a region on a form and when the mouse enters that region it shows 2 buttons (which are on the form and within the bounds of the rectangle) and I would like the buttons to remain visible when the mouse is over either of the 2 buttons then when the mouse leaves the region or leaves the form they are set to invisible again. Here's the code I have so far:
Private m_TitleColor As Color
Private Const m_TitleHeight As Integer = 30I
Protected Overrides Sub OnPaint(ByVal e As System.Windows.Forms.PaintEventArgs)
[code].....
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Jun 22, 2010
I made a form with only 1 Button. I want that when i click that button, 2 more buttons should be appeared. Example: Button1 is clicked. Button2 and Button3 are displayed. I have named Button1 as Scan. When i click on Scan, the Button2(Pause) and Button3(Stop) should be displayed. When it is scanning, i have placed the progress bar with the timer. When the progress bar finishes loading, Button2(Pause) and Button3(Stop) should be hidden again.
[Code]...
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Sep 19, 2008
I am creating an application for Windows Mobile 6 in Visual Studio 2005. I have a TabStrip on the main form. There are 2 buttons i want at the top of the tab strip, but i don't want them to be part of it. I need the same buttons to show when the tabs change. I used to use the ZOrder function or Parent function but can't see how to do it in the new version. Any ideas?
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May 18, 2011
I want to launch a application called Foxit Reader pdf Reader .I know System.Diagnostics.Process.Start(path) can do it but . Requirements are Foxit Reader should be installed on machine.Now if it is installed how to serarch for the path of its Executable to provide the parameter as I can not hardcode the path for different machines.
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Aug 10, 2009
I am using SQl data reader to get value from SQL database.Language VB.NET.After getting data into reader, i run a while loop
While reader.Read
If reader.HasRows() Then
/* Proessing of data *[code]....
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Jul 1, 2009
Are there any examples on how to implement a datareader? I have try copying the code from MSDN but;--"Dim reader as SQLDataReader = command. ExecuteReader()"Where it is placed? As a declariton at the beggining of a form? or as as VB resource?and then how those it bind a to a dataGridView? How can I loop through each rows once is bind to use the contents of the column/row?I can perform the above function easly inside of MS Access using VBA. I have gone through various books from WROX but none of them show a clear example or the code is obsolete.
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Oct 15, 2010
I'm switching over from PHP to vb.net. And some of the concepts are a bit different. Mainly I struggle with concepts and keywords, so it hard to look stuff up. Currently I'm creating a dashboard and needs to run a lot of different sql queries. But I see where I should be able to minimize my code. But things that I have tired don't work. Example below of two chunks of code that I should be able to put in some type of loop and increment a value for my sqlstring and textbox output.
[Code]...
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