I get a new error saying it cannot recognize the database format.
public partial class DataViewer : Form {
string conStr = "Provider=SQLOLEDB;Data Source=Database.mdf";
DataSet dS = new DataSet();
DataSet tdS = new DataSet();
OleDbConnection con = null;
I'm working on a project where we access a tiny premade database in order to log into and access another page. I got the log in part working right, but the last part of the project asks me to lock out the account after a certain number of failed attempts. I'm not sure if I need a method to do this or if I can do it right there in the button handler. I tried creating a method to use on the object that was already there, but I'm not sure if that's the right way to go about it. It says it locks the account, but the value in the database never changes, and I don't know why.
//from the login button handler protected void btnLogin_Click(object sender, EventArgs e) { bool IsFound = false; clsDataLayer dl = new clsDataLayer(); IsFound = dl.GetUser(Server.MapPath("~/AddressBook.mdb"), txtUserID.Text, txtPassword.Text); if (IsFound) { Response.Redirect("~/frmUpdateAddress.aspx");
#include <iostream> struct Object { int size; // Want to avoid this because size is (almost always) constant Object (int s): size(s) {} // for every Object subtype.
[Code] ....
I want this:
#include <iostream> struct Object { virtual int getSize() const = 0; }; struct Block: Object { int getSize() const {return 5;} // always 5, except once in a blue moon it may change
[Code] ....
The Decorator Pattern works (getSize() can then return 6) but it is a poor choice for my program because it will cause more problems (due to many containers holding its old address, among other things. Any way to achieve this without any change of address, and without creating new storage somewhere, either inside the class or outside the class (too much responsibility to follow that stored value for the rest of the program just for this rare change, and creating a data member uses up too much memory for the many, many Block instances)?
I have to convert string to double. i'm using "atof" function to achieve same.
I have string as "0.0409434228722337" and i'm converting with "atof" But i'm getting double value as "0.040943422872233702". Why it adds 02 additionally at the end?
More example :
"0.0409434228722337" converts to "0.040943422872233702" "0.067187778121134" converts to "0.067187778121133995"
Is there any other possibility to convert string to double without changing data ?
I had assign to do a project using c# window form.Now I am doing a smart part of coding which is let the data in textbox and using keypress function with a enter,the data will save in database and show on datagridview.I had searching how to do it online but all of them using mysql or sqlcommand something to do it! But my project is using the code that already done and can access without mysql or sql coding... Using this code to connect and show in datagridview...
using (TMPB_attn_DAL dalObj = new TMPB_attn_DAL()) { dataGridView1.DataSource = dalObj.GetRecords().Cast<TMPB_attn>().ToList(); dataGridView1.Refresh(); }
This is the function code for me to add data inside database,it can run but just still cant save.
private void txt_proximity_KeyPress(object sender, KeyPressEventArgs e) { if (e.KeyChar == (char)13) { if (BusinessLogicLayer.TMS_GET_PROXIMITY_VALID_TO_USE(txt_proximity.Text) == true) { TMPB_attn row_tmpb_attn = new TMPB_attn();
I am writing a contact book program in C that will run in the terminal. I am going to create a file to store the data separately, but have run into a few question areas:
1) It has occurred to me that it might be more efficient to setup the program so that it sorts the contact info by info type rather than by running through an index of the contacts and then linking all of that contact's information to that index. So basically one part of the file would be phone numbers, the other contact names, and so forth with each piece of data linked to another piece within the data file that corresponds to the same contact. Am I wrong to think this is a more efficient way to set up the file?
2)How would you link the data information to other pieces of data corresponding to the same contact in C? My thought is to do it with pointers, but I didn't know if it were possible to have the pointers as I didn't know if the pointer would point "persistently" to the data once the file closed.As I felt this is a more "in general" question, I have chosen to omit my code from this post (especially since there is not much "meat" in it to speak of).
I can not do transferring data to textboxes from database.
="c#">using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using MySql.Data.MySqlClient; namespace WindowsFormsApplication1{
In my WPF application i have a SQL class which i am trying to use to store all of my SQL queries so far this is working fine for when i want to return one piece of data like this:
public string GetEnquiry_ContactName(int EnquiryID) { string ContactName = null; //Try to do the following if not then show the error message. try { //Create the SQL Connection SqlConnection cn = new SqlConnection(Models.M_GlobalVariables.GetConnection);
[Code] ....
But if i want to return a collection of data like this:
public ObservableCollection<CompanyNames> GetCompanyNames () { public class CompanyNames { public string CompanyName { get; set; } public CompanyNames(string name) { CompanyName = name;
[Code] ....
It does not work and i get 'Not all code paths return a value' and ''List_CompanyNames' is a 'property' but is used like a 'type''. But if i have it in my ViewModel like this:
//Code for the 'Company Names' dropdown box public class CompanyNames { public string CompanyName { get; set; } public CompanyNames(string name) { CompanyName = name;
[Code] ....
It works absolutely fine but the whole point of my SQL class is to have all my SQL code in that class instead of some of it in the ViewModel.
how I could use a Image control where I can upload an image to a folder(done that) and then take that image right after uploading it (in the same line of code) view it on the image control...
Any utility that would allow me to display the resources in a DLL? i.e. if the DLL contains icons / bitmaps etc I'd be able to view them. I've a feeling that such a tool exists but I can't remember what it's called.
I want to connect an access database (.mdb) to my Windows Forms application - this I can do and I have no problems viewing my table in server explorer.
Some code example or template that I can use as a base to learn from - I have literally trawled Google and Youtube and cannot find what I am after.
What I want to do is have a basic form, 2 text boxes and a button to save the data to my database.
Exporting the data from the sql database to excel directly.this code is not working and i am not getting file in particular location. My connection string is :
Data Source=aswin-pcsqlexpress;Initial Catalog=pro;Integrated Security=True
using Excel=Microsoft.Office.Interop.Excel; using System.Runtime.InteropServices; namespace WindowsFormsApplication5 { public partial class Form1 : Form { SqlConnection con = new SqlConnection(ConfigurationSettings.AppSettings["SqlCon"].ToString());
i am student working on a project in c# to maintain the datas from a solar battery monitoring.i already imported the datas from the battery monnitoring and saved them in mysql database and retrived the data in c#.
i have problem in retriving the data in accordance with the date and time range selection.
what i am trying to do is there are more than 1000 datas in the table if i select two date and time the datas in the table should cross check these dates and show all the datas in the table in between those date&time
I've been looking for a C# library that is well documented and can show DICOM (medical CT scan data, including the image) as jpeg/bmp data that is viewable in a PictureBox.
I've only found OpenDicom which is more or less unsupported now and EvilDicom - whose owner has made some significant changes to it, making all existing stack overflow questions on it irrelevant.
I created a class (let call it X) which contains the structure to store the data from my data base. Them I have a class (call Y) which will contain a list for each row in my data base. Third, I have a class with thousands variables (Z). What I am trying to do is to take the list of objects (Y) that contains the data to initialize Z. What I want to now if I can do something like that.
Imaging that one of my rows contain the following data: Type Nameofvariable etc... "static const double; MNFAIL ; 0; 0; 0,25"
In my list I have a node with contain this data
I want to use the field Nameofvariable to initialize the variable called MNFAIL contained in my class Z.
I am busy with a project, it is going to consist out of 3 different windows which is logic enough for this whole code to be interactive.
It must be able to pull data into a windows form, displaying it into a textbox, and when you click on the textbox it needs to open up another window where you will have a windows form that will display data as the code loops through the questions in the database.
I am not sure how to push the data that has been selected on the database to the next window..
Here is my code for the first window:
; namespace WindowsFormsApplication1 { public partial class Form1 : Form { //SqlConnection myConnection = new SqlConnection("Data Source=(local);Initial Catalog=KnowledgeEssentials;Integrated Security=SSPI"); //int intType = 0; public Form1()
[code].....
With the second window the data in the table needs to be displayed and each row from the table needs to have a checkbox next to them, so that if the check box is checked, the relevant information of the checked row will show up in the 3rd window... so MY question is, HOW do I pull that data from that specific database and let it show in the listcheckbox?
I have an application that Opens files with different extensions for viewing purposes only. I use MFC with Multi-Document template.
When I go to Windows Explorer in Windows 7 and right-click on Libraries - Documents, and scroll down to New, Explorer shows multiple links for creating new files with these different extensions.
My application does not create New documents. It just opens them for viewing purposes. In fact, I have disabled the New portion of the mainframe window.
My code includes: EnableShellOpen(); RegisterShellFileTypes(TRUE);
I am at a loss as to what portion of my code would have placed these links into Windows Explorer!
Is there any way to prevent them from being created in the first place?
When server send data then client receive that data, in C# windows services where data receive continuously (Using IP Address and port number) . This below code writing in console application . i want implement same logic in windows service side. but i want data receive continuously.
using System; using System.Collections.Generic; using System.Linq; using System.Text;
[Code]....
Above code write in console application, same logic implementing in windows service, but i want data receiving continuously
Now I can fatch all the excel sheet belongs to the Excel File.But How can I check "If and Only If the sheets are havin Underscore in their name(eg. student_data,teachers_data) then only the data of the sheets will populate in tha data base"
I have created a desktop application using c#.net in visual studio 2005 and sql server 2005, i have created a setup file also but i dont have database in it.. how to include or attach the database file into the project so that it works well in the client machine.....
