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I am a begineer in C#.net
I have created a .sdf database in C# project of Visual Studio 2008. I have used microsoft SQL server compact 3.5 as a data source. I have set the copy to output directory property of that database as copy if newer. I have one table created under that database in VS 2008. When i run the application for the first time the database gets copied in the Query Analyser of Win mobile 5.0 emulator and i could see the table undet it. But when i add more table to the same database in C# project and then run the application once again, i could not see the newly added tables.
Another problem i am facing is that the database in win mobile 5.0 emulator gets corrupted very often. What is the reason? I am losing my data due to this.
I have SQL server management studio installed on my pc. I want to create a SQL server mobile database under it and then add that database to my project. Which data source i have to chose? What are the steps to be followe?
What is the difference in using the database created in Query analyser and the database craeted in SQL server mobile?
Thank in advance
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hello,
The reason for the database to get corrupted is that if your database is connected from the sql server and if you try to modify it from other location like (query analyzer in WM).
Well about the database not being updated.. i too have not much idea. I faced the same problem..All i did was i made modification for the sql server and then replaced the old one in the mobile....
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Hello,
I Insert a web browser object on window mobile form. and my device also have installed opera web browser. and when i open a html file in form web browser using vb.net it opens the new instance of the opera web browser but i want to open the html file in the form web browser.
How i do this.....
Please suggest.
Thanks
Khatri Mitesh
~Khatri Mitesh
khatrimitesh@hotmail.com
Bikaner (Rajasthan)
INDIA
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I am developing an application on Win mobile 5.0 emulator. I need SQL server 2005 for database storage and hence i am using SQL server management studio. I want to connect a smart device project in C# to SQL server 2005.
I have done the following steps-
1. In SQL server management studio, i have selected server type as SQL server mobile and have entered a path for database file and then pressed connect. I have created one table under the database
2. I have connected the emulator with the active sink .I have then transfered this database to Win mobile 5.0 emulator and have placed it under Program Files in the emulator.
3. In VS 2008 under data source configuration wizard i have created a new connection.Then add connection window appears. Now i am not sure which data source to select.
What will be the connection string in order to access the database on Win mobile 5.0 emulator?
Please help me with this. I am a novice in application development on Win mobile platform. Please help me with the detail steps to connect the SQL mobile database to C# smart device project. Also let me if i have followed the proper steps.
Thanks in advance.
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hello,
Here is the process:
In the emulator
File > configure > shared folder....... give a link to your any folder
like D:\Mobile Storage and keep your .sdf file in that folder
and connection string for the sdf file should be
Data Source=\storage card\database.sdf;Password=xyz;
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Hi,
I am developing an application in win32 in which I need to compare two JPEG images files of resolution 240x320 got from Windows mobile after compressing from the .bmp images. I have tried reading the r,g,b values from two images and tried to compare them. But when I am reading them I am getting the same r,g,b values for all the any JPEG images though they are dissimilar.
Here is my code:
CODE
#include "stdafx.h"
#include "stdio.h"
typedef struct
{
BYTE R,G,B;
}colorRGB;
colorRGB *RGB_buffer1,*RGB_buffer2;
void CompareImage()
{
unsigned char tmpBuf1[651],tmpBuf2[651];
int i=0;
WORD nrline;
FILE *Img1=fopen("C:\\Program Files\\MTAF\\Reports\\TC_3_2422009_132042203_4.jpg","r");
FILE*Img2=fopen("D:\\TC_1_2422009_131913187_1.jpg","r");
fread(tmpBuf1,1,651,Img1);
fread(tmpBuf2,1,651,Img2);
int height=320;
int width=240;
RGB_buffer1=(colorRGB *)(malloc(3*width*height));
RGB_buffer2=(colorRGB *)(malloc(3*width1*height1));
for(nrline=0; nrline<height;> {
fread(RGB_buffer1+ nrline*width,1, width*3,Img1);
fread(RGB_buffer2+ nrline*width,1, width*3,Img2);
}
fclose(Img1);
fclose(Img2);
for(i=0;i<height;i++)>
{
if((RGB_buffer1[i].R!=RGB_buffer2[i].R)&&(RGB_buffer1[i].G!=RGB_buffer2[i].G)&&(RGB_buffer1[i].B!=RGB_buffer2[i].B))
{
break;
}
}
if(i==height)
MessageBox(NULL,TEXT("Images are same"),NULL,NULL);
free(RGB_buffer1);
free(RGB_buffer2);
}
Can anybody suggest what am I doing wrong. Or there any the best way to do this JPEG image files comparison.
Thanks in advance for any help.
Regards,
Hema.
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In your if statement that is testing for inequality of the colors the && needs to be changed to ||. Beyond that I can't see why it's not working.
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Hi,
Thanks for the response but I have tried that even which is of no change in output. Th problem here lies in reading the images because I am getting same pixel data in the two buffers taken for the images.
So, consider this and give ur further suggestions.
Thanks&Regards,
Hema
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Hi All ,
I'm trying to develop a application in vb.net,
to send any file from my PC to any bluetooth enabled mobile,
in coverage area of bluetooth dongle(connect with my usb port).
(More then 1 mobile via loop in 1 go)
Is there any class or library in .net is available.
If you can give me some sample code or link of any article...that will be very helpful for me.
Thnx.........
Vijay Jain
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Nope, there's no bluetooth interfaces in the .Net Framework or the .Net compact Framework. You might want to check out http://32feet.net
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Hi everyone.
I just downloaded EC++ 4.0 and i have been trying hard to make it run on my Windows XP.
First of all it did not open because apparently "No standard SDK was found on the desktop....".
So i downloaded the Standard SDK 5.O and installed it on my pc.
This time Ec++ did open and i was able to open a project.
However when i tried compiling the program another error message was displyed...
" The application targeting a standard SDK for Windows CE.net and built for the SH4 CPU cannot be run on the Emulator device. Inorder to run this application on any CPU other than the Emulator you will have to install an SDK that is compatible with the standard SDK for Windows CE.net, the target a shadow platform pertaining to that SDK.
Please see EVC documentation for more details."
Can anyone please help me with this....
PS: The application i have been trying to compile is a remote control application written in Ec++ for a pocket PC running Windows CE 3.0.
Thanks in advance...
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You may want to try using the IDE from ZHMICRO. It is based on C++, you dont need any SDK's, and the applications that you write can be run on other mobile OS's without changing any code.
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Can anyone tell how to access internet from Win mobile 5.0 emulator in Visual Studio 2008? My PC has internet access. Can i get the connection on the emulator? Can i surf the net through the emulator in the same way i suft through my PC?
Please tell me how to do the same.
Thanks in advance.
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Hi Deepali Khalkar,
Go to Active sync File Menu -> Connection Setting ... and Checked the "Allow connections to one of the following :" and select DMA and click on OK Button
then you got in your Project (IDE) Visual Studio select Tools - > Device Emulator Manager.. --> select your opened Emulator and right click on it and select cradle. now you are able to access internet.
Cheer 
Pavan Pareta
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Another way to enable internet connection:
* Open 'Emulator Properties' window using File->Configure menu.
* go to the network tab and check the 'Enable NE2000 PCMCI Network adaptor and bind to' chekcbox.
* select your machine's NIC card from the listbox.
* if you get a notification to setup proxy setting, choose anything and it should work.
Ankita
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Hi,
Set the proxy setting in emulator.
than go to Tools Menu-------> Device Emulator---------> Select the appropriate Device and Right click and click on Cradle........
May be it solved your problem.
Thanks
~Khatri Mitesh
khatrimitesh@hotmail.com
Bikaner (Rajasthan)
INDIA
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I am developing a project that need to access mobile calender from PC. And i have several example that can access mobile calender from PC. But i can't run this application without installing PC Suite in my PC. How can i Run this example without PC Suite? Have any AT Command to access mobile Calendar?
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What type of mobile device are you using?
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I have tried with the following parameterised query for select statement and is working fine.
SqlCeConnection conn;
SqlCeCommand comm;
comm = new SqlCeCommand();
comm.Connection = conn;
comm.CommandText = "select * from signuptbl where username =@uname";
SqlCeParameter para = new SqlCeParameter();
para.ParameterName = "@uname";
para.Value = textBox1 .Text ;
comm.Parameters.Add(para);
Now i want to write an update query which takes multiple parameters. I have thought of the following code.
SqlCeConnection conn;
SqlCeCommand comm;
comm = new SqlCeCommand();
comm.Connection = conn;
comm.CommandText = "update signuptbl set firstname=@fname,lastname=@lname,,psw=@psw1 where username =@uname";
SqlCeParameter para = new SqlCeParameter();
para.ParameterName = "@uname";
para.Value = textBox1 .Text ;
comm.Parameters.Add(para);
para.ParameterName = "@psw";
para.Value = textBox2 .Text ;
comm.Parameters.Add(para);
para.ParameterName = "@fname";
para.Value = textBox3 .Text ;
comm.Parameters.Add(para);
para.ParameterName = "@lname";
para.Value = textBox3 .Text ;
comm.Parameters.Add(para);
I have tried this code but the row was not updated.
Is this a proper way? How to pass multiple parameters in a query? Can i get a sample code for the same.
Thanks in advance..
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Deepali Khalkar wrote: SqlCeParameter para = new SqlCeParameter();
para.ParameterName = "@uname";
para.Value = textBox1 .Text ;
comm.Parameters.Add(para);
para.ParameterName = "@psw";
para.Value = textBox2 .Text ;
comm.Parameters.Add(para);
para.ParameterName = "@fname";
para.Value = textBox3 .Text ;
comm.Parameters.Add(para);
para.ParameterName = "@lname";
para.Value = textBox3 .Text ;
comm.Parameters.Add(para);
you declare single variable for parameter para and change the name and value multiple time. Instead of this, use multiple variable for parameter. use following code
<br />
SqlCeParameter para1 = new SqlCeParameter();<br />
para1.ParameterName = "@uname";<br />
para1.Value = textBox1 .Text ;<br />
comm.Parameters.Add(para1);<br />
<br />
SqlCeParameter para2 = new SqlCeParameter();<br />
para2.ParameterName = "@psw";<br />
para2.Value = textBox2 .Text ;<br />
comm.Parameters.Add(para2);<br />
<br />
SqlCeParameter para3 = new SqlCeParameter();<br />
para3.ParameterName = "@fname";<br />
para3.Value = textBox3 .Text ;<br />
comm.Parameters.Add(para3);<br />
<br />
SqlCeParameter para4 = new SqlCeParameter();<br />
para4.ParameterName = "@lname";<br />
para4.Value = textBox3 .Text ;<br />
comm.Parameters.Add(para4);
also specify the type of parameter
hope this helps
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I am developing an application on Win mobile 5.0 emulator in C# using Visual studio 2008.
Can anyone let me know how to write an SQL statement in C# which returns the row count?
Is the parameter required to store the count value?
I will be greatefull if someone helps with the code snippet for the same.
I have tried the following code for the select statement(the select stmt does not return the row count value) and is working fine.
String uname_in='abc';
SqlCeConnection conn;
SqlCeCommand comm;
SqlCeDataAdapter adap = new SqlCeDataAdapter();
String connstring = @"Data Source=Program Files\signup\signupdb.sdf";
conn = new SqlCeConnection(connstring);
conn.Open();
comm = new SqlCeCommand();
comm.Connection = conn;
comm.CommandText = "select * from signuptbl where username =@uname";
SqlCeParameter para = new SqlCeParameter();
para.ParameterName = "@uname";
para.Value = uname_in;
comm.Parameters.Add(para);
adap.SelectCommand = comm;
System.Data.DataTable dt = new DataTable();
ap.Fill(dt);
psw1 = dt.Rows[0][1].ToString();
What changes should be done in the above code for writing a select stmt the return the number of rows selected?
Thanks in advance.
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Hi Deepali Khalkar,
In SQL Query you can use count() mehtod for getting selected rows count.
see the below example.
private int GetRowCount()
{
int intCount = 0;
SqlCeConnection objCon = new SqlCeConnection("ConnectionString");
objCon.Open();
SqlCeCommand objCmd = new SqlCeCommand("SELECT COUNT(*) AS UserCount FROM Users", objCon);
intCount = System.Convert.ToInt32( objCmd.ExecuteScalar().ToString());
objCon.Close();
objCmd.Dispose();
return intCount;
}
hope this may be help... 
Pavan Pareta
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FYI "SELECT ROWS" should be faster that "Select Count(*)"
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Hi,
I am using CF3.5 on Windows CE5.0 and when I try to create a bitmap using:
Bitmp bmp = new Bitmap(filepath)
I get the exception error below. I also tried loading file into MemoryStreamm and then tried creating bitmap by passing a memory stream with all bytes corresponding to image but I get same error.
I tried loading bmp, jpg, png images but none work. The device I am using is an iPAQ310. Is it possible that it's missing some kind of codec or some driver that compact framework assumes it to be there? If so, what is it missing?
Thanks in advance for any help you can provide.
System.Exception was unhandled
Message="Exception"
StackTrace:
at Microsoft.AGL.Common.MISC.HandleAr(PAL_ERROR ar)
at System.Drawing.Bitmap._InitFromMemoryStream(MemoryStream mstream)
at System.Drawing.Bitmap..ctor(String filename)
at SkyVision.LocalFileImages.Resources.get_tiny()
at SkyVision.FrontViewPanel..ctor()
at SkyVision.MainForm.InitializeComponent()
at SkyVision.MainForm..ctor()
at SkyVision.Program.Main()
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You may want to install onto your device the resource DLL that contains the detailed error messages.
What is the resolution of the image?
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