Sql Server - Winforms Dropdownbox Data Load : Allow The User To Select The State First?
Nov 1, 2010
I have a VB2005 winforms application that will loads city data from my database table. This is to ensure that the user enters the correct city spelling, in order to receive an accurate quote. Currently, there are about 150K cities that are being loaded to the dropdown listbox on page load. It takes about 30-40 seconds for that page to load. My initial thought was to allow the user to select the state first. Then load the city values. But the user has the option of going back and requesting a quote for a different city / state.
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Feb 8, 2009
I'm setting up a program where I would like the user to be able to select a state from a combo box. I can not figure out how to allow to select the abbreviation from the drop down list and also allow them to type a letter and it will select the state from the state or just allow them to type the full abbreviation that would match what is already in the list. It is supposed to be in the drop down list style. I would also like to confirm that the user has chosen a state before allowing them to click a submit button but I'm not sure how to go about confirming it.
Private Sub FrmMain_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
' Inserts state abbreviations in combo box
cboState.SelectedItem = " "
cboState.Items.Add(" ")
[code].....
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Jan 16, 2012
If I enter a data in a textbox, I want my listview to select the same data entered in the textbox. Example: I have a StudentNumber column in my listview and it has data on it (ex. 123456)
I will enter 123456 in the textbox. The ListView must select 123456?
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Oct 20, 2009
I have written a program that requires a particular image to appear in a picturebox. The image will be 1 out of 114 possibilites and the correct one is determined at runtime. I have all 114 images loaded into resources and I have the program correctley selecting the name of the jpg. I have the name of the jpg set to a variable (string) named gsSBdetail and I can make the name of the jpg file appear in a textbox. What code would I write to make the jpg in resources with the name assigned to gsSBdetail appear in a picturebox? NOTE: I have all of the names of the jpg's in a table in a SQL server database and use a multi parameter query to select the correct jpg file name, which in turn is assigend to the gsSBdetail variable. Is ther a way to load jpg's into the SQL server table and just select the jpg file itself for the picture box?
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Jun 22, 2011
This is my first attempt at creating a Winforms application, and I have been developing in the .Net Framework (Silverlight, ASP.Net, WPF) for about 6 months. So, my appologies if this is a newbie question.
Basically what I am doing right now is taking the drawings of a stylus-based input, and storing them into an image field in a SQL Server database. Then, in another form, I go and get that image out of the database, and load it into a picture box. It works, but it is rather "sloppy" how it got there.When the user clicks save, it stores that image into a temporary folder, then converts it to a byte array and throws it into the database that way. Then, it deletes the file from the temporary folder. When retrieving it, it pulls it out of the database in a byte array, then converts it to an image in a temporary folder, thus displaying it on the form.
Is there a way that I can just bypass the storing of the file onto the user's harddrive both times, and go from byte array to picturebox?
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Jun 3, 2011
i hve create combobox & text box and add database source to my project...i know how to binding data or load data to combobox using SELECT query..but can i change SELECT to INSERT query cz i wont when i type data into textbox,data will be in database...second..can i binding without add database to project..i mean mydatabase in debug folder..i hve problem binding data if database is not in myproject..
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Jun 29, 2010
I do have Visual VB.NET 2008 Express installed, SQL Server 2005 express installed, and I do know how to start a brand new project in VB.NET, and then add the database to the solution explorer, modify the tables/fields, etc. I know how to create a WinForm, add some controls (and name them and whatnot).....
So in MS Access I know how to use VB in the Code-Behind-Form to use the form in an unbound manner, and insert data into the tables via Visual Basic with SQL statements. I am looking to be able to begin the same sort of thing here, because I guess I have to start somewhere?
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Apr 4, 2010
My application needs to be able to be pointed at different SQL Servers and different databases and I would like to provide the end user with a nice method of selecting both the server and database (the app is for use by other IT staff).Ideally, I was thinking of allowing them to browse to the server (with possibly entering credentials or even better, using their Windows credentials as the databases in question should be accessible to the relevant people via their AD account), and then listing the databases on that server allowing them to select one to use.
I would like them to then be able to easily change the server and database whenever necessary.I imagine I would then need to build the connection strings based on what they select but at the moment I have got rather stuck in just trying to create a form with some kind of Server Browser (I've not got as far as a database browser!).Failing some kind of server/database browser options, I would change to some simple text boxes where the user can enter the name of the server and database directly with some kind of connection verification button.
Finally, is it easy to connect to multiple databases on the same SQL Server at the same time? Is it just a case of creating and referencing multiple connection strings?I am using VB 2008 Professional and SQL Server 2005 Standard.
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Mar 11, 2010
VB.NET:i want to select data from sql server 2005 DB table and displaying into text box that depends on combo box selection using VB.NET
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Aug 9, 2011
The DB has a field "end date" and 1753/1/1 is supposed to be the value representing nothing, as we cannot assign null to datatime in sql server..
In reporting application the select querry used, gets the data including those 1753 date values. good
Problem 1753 date causes hell with report calculations. there are a lot of calculations in the report and changing the code to ignore 1753 will be a headache, so i was thinking Is there a way to tell sql server,
SELECT *
FROM TABLE BUT IN END_DATE
WHERE VALUE='1753/1/1 01:00:00.000' REPLACE WITH PARAMETER1
CRUDE EDIT (donot have access to debugger currently)
i cannot remember but i get an error like "nothing should be mapped on something" when i insert record with null date! THIS HAPPENS ONLY WHEN USING VB.NET in csharp it works fine. do you know why??
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Mar 11, 2010
VB.NET:i want to select data from sql server 2005 DB table and displaying into text box that depends on combo box selection using VB.NET
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Jul 25, 2010
I have created a program in Visual basic 2010, the program contains many different objects e.g. datagridview, textbox, buttons, graphs etc, which can all be modified by the user. The user can also select a file using 'SaveFileDialog'.
Is there a way to save all the properties associated with each object to this file and later load the program back to exactly the same state it was saved in, after the user has selected saved file using 'LoadFileDialog'? Preferably in binary.
I can do this the hard way in ASC11 format by interrogating objects user editable properties and saving them. I would rather not use this method as it will require a lot of code and any future program changes will require a lot of extra work.
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Aug 9, 2009
I have created a program in Visual basic 2010, the program contains many different objects e.g. datagridview, textbox, buttons, graphs etc, which can all be modified by the user. The user can also select a file using 'SaveFileDialog'.
Is there a way to save all the properties associated with each object to this file and later load the program back to exactly the same state it was saved in, after the user has selected saved file using 'LoadFileDialog'? Preferably in binary.I can do this the hard way in ASC11 format by interrogating objects user editable properties and saving them. I would rather not use this method as it will require a lot of code and any future program changes will require a lot of extra work.
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Apr 19, 2009
what is the diffrence between single call and single ton 2)is it possible to maintain state for every user whose requests not overwrite with another user..i mean i created one remoting application and client.i have one class created in remoting application and i am calling functions created in this call from client application.
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Jan 30, 2010
Say I have a tile map, example:
111111
122221
122221
111111
And we know that the total X and Y coordinates of the map is (6, 4), with the numbers 1 and 2 representing different tiles at specific coordinates.I have already retrieved the X and Y coordinate for each tile, now all I want to do is duplicate(clone) the entire map. After I clone it, I want the user to be able to select any tile, and read data from it.
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Oct 23, 2010
How can I catch error if the data that user select not in database?
This is my code.[code...]
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Feb 9, 2012
I am wanting to pull data out a select table and wanting to use it locally as Read Only data I am stuck on how to write the data to the local Temporary table[code]...
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Jun 22, 2010
I have a vb .NET 2005 form that needs to load data based on a selected month by the user. Because there is a large amount of data in the table (60k+ records per month) it is taking the query a long time to pull the dataset back and populate the form. how I can decrease the overhead associated with querying a large dataset to populate a base form?
Note, I have created an identity key on the main table but haven't yet indexed any other fields (Though I could use some suggestions on how I should index).
See the following example of the Stored Proc that is run before my .net form is launched:
Dim cmd2 As New SqlCommand
Dim ConnectionString As String
Dim TheDatabase As System.Data.SqlClient.SqlConnection
[CODE]...
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Feb 13, 2012
your life whatever you are doing.I have a big question. Well, it's a big job for me. I tried to google and follow some tutorials frist but finally realise rom stackoverflowers.I have a one big xml file such below. I have no control over its structure as it already exists with data.
<?xml version="1.0" encoding="utf-8" ?>
<root>
<Category Cat="A">
[code]....
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Jul 31, 2009
I have a DataGridView that has columns with a value type of boolean.To load the DataGridView, I load values into a DataTable then set theDataGridView.DataSource = theTable What value can I use in the table to load an intermediate check state?
Would it be better to use a check box control with a value than to use a column set to the boolean data type?
The check box is for display only, and will not need to be changed.
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Jan 14, 2012
I haven't used VB in decades and I'm restarting with what I thought would be a simple program. I have two fields on a little form, both of which display a date (dd/mm/yyyy). Field1 is an entry field except on load where is contains a date calculated from field2 (which is 'now' upon application load). Field1 is 'now' + 10 days. This is the default state.
Once loaded (with the data described above), the user can input only in field1. Field2, an inactive field used only for display, is field1 - 10 days. After 15 seconds, fields 1 and 2 revert to their default states as described in the first paragraph. I'm getting all messed up with the 'on load' state. I'll start playing with the timer once I get the initial stuff done.
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Oct 30, 2010
I've got a stupid question (i think) I need to convert a textbox into a dropdownbox, end let it respond to the text the user is filling in.Here's the From as it looks and works now:
What i want is this:As the user starts typing a name in textbox Naam (searchbox) which needs to become a dropdownbox, it should drop down and show all the matching data in data row Naam (my second row in the data table), so that the user can then select one of them and all of it's corresponding data is shown.
So far i have been able to convert it into a dropdownbox, but then it only searches for Naam, but does not display the rest of the data.For example:I have the data of 1 client on screen, his ID is 4, then i use the dropdownbox to search for another client, it finds the other client, but it displays only Naam and not the corresponding ID and other data.
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Dec 6, 2009
I have several forms that are "reused," or vistited more than once per each time in the whole program. In VB6, using Form.Show() would show the form in its original state (the state is was when created in the designer). After closing this form (Unload Me), showing it again would still show the form in its original state.
I am coding in VB.NET 2008, and noticed that when I reopen a form I had closed during a session using my program, the form is in the state it was when I closed it (labels and listboxes filled with data), and not in its original state. I currently have the Form.Closing event filled with code to clear all of the controls, but I think that there must be a better way to "clear" or "reset" the form.
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Apr 27, 2011
I'm trying to update a data user using vb.net2008 and sql server management studio express for my backend. the error says "must declare the scalar variable "@username" here's the code .[code]...
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Dec 6, 2009
My ISP's DNS server goes down all of a sudden sometimes. This is very annoying while surfing the internet. So, I'm trying to make an application which has the following characteristics :
Runs in system tray
Pings the server periodically
Notifies when the server becomes unreachable/active
Now, I know that the existing workarounds are to use OpenDNS or ping <IP Address> -t in command prompt. I don't want to use them... the reason being that the former gives much higher pings than my DNS & for the latter, I'll have to switch windows.
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Sep 10, 2010
I'm pretty new to WinForm Development (Normally just do Web Dev)... Anyhow, what i'm trying to do is store information about the logged in user so it can be used throughout the App...Normally in WebDev you could use Session, Cookie Etc..
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Apr 18, 2012
This is a WinForms Application in VB. In my application I am trying to make it easier for the user to pick out items in a list quickly based on the items text color.. So I am trying to assign the color to each item using a select case statement as below... The problem is that I am getting an error saying "Public member 'Attributes' on type 'String' not found." VB flags the lines with the Attribute.Add param with this error.. Here is the code that I currently have...
For Each u In _units
_counter += 1
u_lookupNumber_box.Items.Add((Convert.ToString(u.UnitId)) + " - " + (Convert.ToString(u.perMonthCost)))
[Code].....
I did notice that when I did the .attributes part when I hit "." and typed "att" it did not appear in the intelisense box in vb.. Which makes me think I need to assign the name "attributes" somehow to the dropdownbox first.. It should be noted that u_lookupNumber_box is the name of the drop down box on my form..
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Mar 4, 2010
I have created a tab control and few forms. Each form opens in a separate tab when a button is clicked
I have take care so that the form does not open again in a new tab if its already open. But I am having trouble bringing the tab to focus.I want to Select the From in the tab and bring it to focus if its already in the tab list.
[Code]...
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Apr 19, 2011
I'm trying to update a data user using vb.net2008 and sql server management studio express for my backend. the error says "must declare the scalar variable "@username"
Here's the code .
Private Sub btnupdate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)Handles btnupdate.Click
Dim connstring = New SqlClient.SqlConnection("Data Source=MISD-
[CODE]...
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Dec 7, 2009
I need help making this code work better. Currently, what happens is when it reloads, I loose the third value which is a calculated value . I would like for my page to reload without loosing the values for each property and each instance of the user control on the page.
[Code]...
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