XML Database :: Execute SQL Against Imported Data?
Mar 13, 2010
I am working on a program where I need a small database. I wanted to use XML to store the data, so I followed this tutorial:Everything there works fine. What I now want to do is figure out how to execute SQL statements against the imported data to do inserts and queries.I've searched and searched, but cannot seem to find relevant info. Every example I see needs a connection string, but that doesn't apply here as far as I can tell.
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Jun 21, 2010
I posted earlier this week about reading in data from a csv/txt file into an array. My data is huge, 100 columns and 12000+ rows. I would like to name variables by column and then plot these variables. After I read the data line by line and delimit the row, I'm not sure how to put each integer into it's own separate column, and then continue this for the next row and the next row, ect.
After some reading I would imagine the proper way to do this would be by creating a structure and then read the data into the structure, but there's no real starter example/tutorial out there that does this. I know some people will read this and get pissy, but you've got to realize I'm coming from Matlab and vb.net is a huge change for me.
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Nov 26, 2011
How can I bulk copy a datagridview that has csv data imported, then export to SQL
Private Shared Sub CopyData(ByVal sourceTable As DataGridView, ByVal SQLDESTINATION As SqlConnection)
' column mappings example:
[Code].....
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Feb 15, 2012
I have this code that will import the excel sheet to the datatable then inserts it in the database, but I have this problem.I have set the HDR to yes so that the first row will be considered as its header, but the problem now is that if the first row is null, the datatable will automatically named it's header as f1,f2 and so on. how can I set the header as null if the first row is null? so I can validate it afterwards
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Nov 20, 2011
ut refreshing a databound Combobox After New Data in Imported into the Database. As it seems not be updating Without Closing the Form Thus resetting the Binding Source. but how can i do this on the Fly Lets say on the Combobox is Clicked it dose the updated List?
Its starting to be Quite Irritating That it is dosen't seem to be affected by:
ComboBox1.ResetText()
ComboBox1.Refresh()
[code].....
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Jun 7, 2011
Another noob question from me...one of these days I'll get the hang of this VB!I am importing data from an Access table that has four columns/fields. I have set up the relevant headings etc on the list view control...but I have also set up a 5th column as I want to have that representing the percentage change between columns 3 and 4 (which are numeric).
Here's my code. What I want to know, is that having confused myself with code I've written / adapted from advice given etc where do I put in a forumula to add something to a column in my list view that is a calculation based on two columns imported from the table?
[Code]...
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Jul 28, 2010
I am importing data from CSV file into a dataset using OLEDB data adaptor.I created a query with query builder to extract the desired data then copied the text generated into my code. Everything works as it should exepct that the seconds part of a datetime column is missing when the code is run.The odd thing about this is that the seconds part appears when i execute the query in query builder.[code]
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Mar 25, 2009
I'm trying to calculate the average hours worked from a set of data imported from a text file using streamreader. My problem is counting the number of entries and the total hours worked imported from a text file within a loop[.
[Code]...
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Jan 4, 2011
I have a problem saving a dataset which contains rows that i have imported from another dataset. i can successfully view the imported rows in a gridview but i cannot commit the rows back to the database.
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Sep 2, 2009
We have a VB6 program that uses an ADODB.Connection to establish a database connection and use its execute function to run SQL statements. The connection we have established is to a SQL Server. It has been working fine. Currently, I am trying to change the connection to a MySQL database. I changed the connection string and the connection is ok.
However, when it comes to running the execute function, it returns a runtime error 3246 - connection object cannot be explicitly closed while in a transaction.
I checked the connection.status before calling execute and found that it is open. When I use MySQL's server connections to check the status, I found that there was a connection before and after execute was called.
I encountered this same error whether I used MySQL ODBC 5.1 Driver or MySQL ODBC 3.51 Driver.
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May 17, 2012
Whenever I run the form and complete the procedure then I need to go back to sql database and click on execute. I want to avoid everytime going back and executing each entry because if I don't execute everytime then the further other [b]form data [/b]will not be[b] retrieved[/b] properly as the [b]previous form[/b] will [b]not be updated[/b]. I hope ur understanding ...
[Code]...
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May 6, 2010
I'm new to VB.NET. I'm trying very hard to not go screaming back to VB6...... I have a Query stored in an Access2000 database called 'build_VNMON'. (Does that make it a Stored Procedure ?) It uses multiple tables and multiple Union Statements to arrive at the desired results. It may not need to be as convoluted as it is, but I inherited it, and it works. What I really need is to output one column of the build_VNMON result to a text file, so I'm trying to use an OleDbDataReader.
[Code]...
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Aug 16, 2010
I want to execute an SQL statement and put the result in to a data table.
Sub getvehicletypes()
Dim dt As New DataTable
Dim intLine As Integer = 0
[Code].....
Once Ive got it in a dataset I need to work out how to search the dataset for a code and return the corresponding description and vice versa
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Nov 22, 2010
I wrote the programme with vs2008 and access 2007,i built its setup.when i execute my setup on winxp ,its true,but when i execute it on win 7 ,when i want to save my data i have an error.
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Feb 29, 2012
I am trying to execute a stored procedure and place the data in a datagrid manually (without using the .net wizard). I am using vb.net and asp.net in visual studio.Here is my code but I can't figure out where I'm going wrong.
Imports System.Data.Sql,
Imports System.Data.SqlClient
Imports System.Diagnostics
Imports System
[code].....
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Sep 17, 2010
I got a system which i want to insert, delete, update the data into my database and the data from database will be display using datagrid. The below is the coding for one of my button, delete.
Private Sub btnDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDelete.Click
Try
btnSearchEmpNo.Enabled = False[code].....
Now I wanna set when user click on this button to delete a employee (for example) then the datagrid that i have in my application will not show the data of the deleted employee but in the background, the employee haven't been deleted from database.The employee only will be deleted from database when the user click on SAVE button.I know this application have to use RowState but how?
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Dec 14, 2011
What I want to happen is that the button from my system will remove the previous data from database and then insert new data to database from text file. Im done with inserting new data. The thing is that I dont how to control or where to put the Delete Command from my code.
[Code]...
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May 9, 2011
can a vb6 project be imported into vs2010? I have a vb6 project that I have been working on and would prefer not to start all over again.
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Sep 30, 2009
I am using Visual Studio 2008 and created an ASP.NET 3.5 project and solution. I added another project to my solution, a class library. I added a reference to my class library. Now when I click on the properties of my class library, the Default Namespace is set to "HRCommon", which is correct. Now for some reason, from my ASP.NET application, it's automatically importing the HRCommon namespace. So when I want to reference a class out of my class library, I just need to type the classname. I want to have to specify the whole name, like HRCommon.<ClassName> instead of just <ClassName>.
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Dec 9, 2010
VB has a feature that C# does not, imported namespaces at a project level (My Project>References>Imported Namespaces). When new people check projects out of source control none of our custom imports are included. Where is this VB specific Imported Namespaces stored?
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Jun 15, 2010
I have a MS Access database file that I imported into my project as a data source. It's visible in my solution explorer.I have a DataGridView in my form whose data source is set to that imported access file.Right now I have con set to the actual file access database file, but when Iend queries, the changes are made to my actual access file, and not the data source within my project!Dim con as OleDbConnection = new OleDbConnection("***database.mdb")Within the above *** string it points to the databasefile located on my hard drive that I imported into my project. But when I send queries to my DataGridView it makes those changes on the file, not on the data source that I bound to the DGV.
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Feb 25, 2010
[Code]...
how can i get this code to return all values instead of just the first value ?
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Oct 24, 2010
I made a custom control that is a 15x15 grid designed to show a tiled map. Inside I have a class that inherits from pictureBox. The problem comes when I try to place my DLL inside the toolbox. When I click "browse" and select my DLL to import it simply import my class inheriting pictureBox instead of the whole package.
Here is a picture of my files. Grid.vb is the control, clsTile is the pictureBox class and the other one is irrelevant. [URL]
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Aug 14, 2009
I use adobe reader component in vb.net.normal loading : AdobeReader.src = "C:mydoc.pdf" is ok!Now I want loading a pdf file imported in my.resources, is possible?
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Jan 23, 2011
I Imported 2 programs that I made into one solution. I made a "BIG" main menu (new windows form), put two buttons. I code one button to open up the first project (that works fine). I code the other button to open the project I imported, however it says that the name is not declared. Am I doing something wrong?
here is my code for the "BIG" main menu:
[Code]...
now only the "Original name of first project" appears to be not declared, if I delete "Original name of first project", then "the project I imported"is not declared and so forth. Note: These are not the exact names I called my forms. I'm just trying to explain it clearer.
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Mar 6, 2010
I have a program that can view different images selected by the user off of their hard drive. How can I have it so they can then save that image to a different place on their hard drive using my program.? I don't know much about saving files in VB.
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Apr 9, 2010
I am use to VB.NET. The game source code I am learning from is written in C#. I find it annoying that I have to add using System.Diagnostics to the source code in order to type Debug.WriteLine.... I checked under project properties, but I cannot find the References tab that allows me to add namespaces to Imported Namespaces. Where do I find this in C#?
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Sep 5, 2011
I've created a project which references some other projects in my solution. I've added the references properly to my project (which I've done a thousand times before), and used them in an Imports statement. I can successfully create references to the objects contained in the referenced namespace at design-time but whenever I attempt to build or run the project, I get build errors saying that the referenced projects do not exist. Their Imports statements change to the broken green underline and the only way to remedy the problem is to re-add the references in my project's properties.
I know that the referenced projects are valid, will compile etc... because they work fine for other projects in the solution. Also, I can go to the definition of their objects as long as I don't build/run.
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Feb 16, 2012
I am migrating project from .net 3.5 to .net 4.0 and faced the following issue. There are 2 DllImport statements:
<DllImport("hid64.dll")> _
Public Sub GenerateHardwareID( _
<MarshalAs(UnmanagedType.LPArray, SizeParamIndex:=1)> ByVal Buffer As Byte(), _
[Code].....
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Feb 9, 2010
I'm using a DLL in my program that is free to use in non commercial environments and it generates a dialog box every time I debug my program to remind you that it's not free for commercial use etc.. At first I couldn't care less about the popup dialog box but when your programming all day it gets really annoying. is there a way to suppress those popup dialog boxes or do I just need to go to my happy place and ignore them when they pop up?
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