Hi Dear,
If you have an single executable file, than you can add 
this exe to Your menu item by using shell command. 
Dim stemp As String
stemp = "path of your executable file"
Shell(stemp)

Now It will work fine.

Dim myConnection As SqlConnection
Dim myCommand As SqlCommand
Dim ra as Integer 
'integer holds the number of records inserted 
myConnection = New SqlConnection
("server=localhost;uid=sa;pwd=;database=Hospital") 
'you need to provide password for sql server
myConnection.Open()
mycommand = New SqlCommand("INSERT INTO Patient
(ID,Name,address,DateofBirth,Gender,Phone,Emergencycontact,D
ateofRegistration) VALUES('" + lblid.Text + "','" + 
txtname.Text + "','" + rtxtaddress.Text + "','" + 
DateTimePicker1.Text + "','" + cmbgender.Text + "','" + 
txtphone.Text + "','" + txtemcon.Text + "','" + 
txtdoreg.Text + "')", mycon)ra=myCommand.ExecuteNonQuery()
MessageBox.Show("New Row Inserted" & ra)
myConnection.Close()

Dim myConnection As SqlConnection
Dim myCommand As SqlCommand
Dim ra as Integer 
'integer holds the number of records inserted 
myConnection = New SqlConnection
("server=localhost;uid=sa;pwd=;database=Hospital") 
'you need to provide password for sql server
myConnection.Open()
mycommand = New SqlCommand("INSERT INTO Patient
(ID,Name,address,DateofBirth,Gender,Phone,Emergencycontact,D
ateofRegistration) VALUES('" + lblid.Text + "','" + 
txtname.Text + "','" + rtxtaddress.Text + "','" + 
DateTimePicker1.Text + "','" + cmbgender.Text + "','" + 
txtphone.Text + "','" + txtemcon.Text + "','" + 
txtdoreg.Text + "')", myconnection)
ra=myCommand.ExecuteNonQuery()
MessageBox.Show("New Row Inserted" & ra)
myConnection.Close()

dim con as new sqlconnection
dim da as sqldataadapter
dim ds as new dataset
dim str as string

con.connectionstring="server=localhost;uid=sa;pwd=;database=
Hospital"
con.open
str="insert into patient values('" & lblid.Text & "','" & 
txtname.Text & "','" & rtxtaddress.Text & "','" & 
DateTimePicker1.Text & "','" & cmbgender.Text & "','" & 
txtphone.Text & "','" & txtemcon.Text & "','" & 
txtdoreg.Text &"')"
da=new sqldataadpter(str,con)
da.fill(ds,"patient")
msgbox "New Row inserted"
con.close

it is not necessary to take only 1kb space it depends upon
ur content written in notepad

flexgrid control is not available in vb.net

otherwise datagirdview control is used in vb.et

flexgrid cant be used in vb.net or in vb.et , but 
datagridview can be used in  vb.et.

u can use flexgrid  in vb.net

This is thred party control. so not use directly. you 
refrenced that dll and then use flexgrid

It is possible to use MS Flex Grid in Vb.net. Since MS-Flex
grid is a Com component. You need to Convert that first into
dotnet component using AxImp.exe(from command line) or if
you are using Visual Studio.Net Add reference to the MS-flex
Grid COM component.Visual studio automatically converts that
into .Net component.

Yes, by adding ref and file "Msflxgrd.ocx"

yes

Hi Rahul,
if you want to save image in SQL Server DataBase,
first we have to convert that image into bytes(BCoz SQL 
Server support byte format).
using system.io.iostream we can convert image into stream 
of bytes.

For example :

stfFilename is path that contain your image.

 Public Shared Function LoadImage(ByVal stfFilename As 
String) As System.Drawing.Image

Dim oStream As System.IO.Stream
Dim oAssembly As System.Reflection.Assembly
oAssembly = System.Reflection.Assembly.GetEntryAssembly
oStream = oAssembly.GetManifestResourceStream(stfFilename)
Return System.Drawing.Image.FromStream(oStream)
End Function

for retrieving image from DB just reverse concept.

For Save Images:

 Private Sub Save()
        Dim strConn, strQuery As String
        Dim cmd As SqlCommand
        Dim img As Image
        Dim imagedata As Byte()
        Dim imgFormat As Imaging.ImageFormat
        Dim myParameter As SqlParameter
        Try
            img = Image.FromFile(Me.txtImage.Text)
            imgFormat = img.RawFormat

            imagedata = ConvertImageToByteArray(img, imgFormat)

            strQuery = "Insert into TBL_STUDENT
(STUD_NAME,SUBJECT,NUMBER,IMAGES) values ('" & txtName.Text
& "','" & txtSubject.Text & "'," & txtNumber.Text & ",@Image)"
            strConn = //Your Connection String
            conn = New SqlConnection(strConn)
            cmd = New SqlCommand(strQuery, conn)

            myParameter = New SqlParameter("@Image",
SqlDbType.Image, imagedata.Length)
            myParameter.Value = imagedata
            cmd.Parameters.Add(myParameter)


            conn.Open()
            cmd.ExecuteNonQuery()
 
            MsgBox("Saved Successfully", MsgBoxStyle.OkOnly)
        Catch ex As Exception

        End Try
    End Sub

  Private Shared Function ConvertImageToByteArray(ByVal
imageToConvert As System.Drawing.Image, ByVal formatOfImage
As Imaging.ImageFormat) As Byte()
        Dim Ret As Byte()

        Try
            Using ms As New MemoryStream()
                imageToConvert.Save(ms, formatOfImage)
                Ret = ms.ToArray()
            End Using
        Catch generatedExceptionName As Exception
            Throw
        End Try

        Return Ret
    End Function

For Retrieve:

 Private Sub RetrieveImages()
        Dim strConn As String
        Dim cmd As SqlCommand
        Dim da As SqlDataAdapter

        Try
            strConn = //Connection string
            conn = New SqlConnection(strConn)
            cmd = New SqlCommand("Select * from
TBL_STUDENT", conn)
            da = New SqlDataAdapter(cmd)
            ds = New DataSet
            da.Fill(ds)
        Catch ex As Exception

        End Try
    End Sub

In abstract classes, its upto u to make methods abstract 
but in interfaces, all methods are bydefault abstract.

In abstract class, there can be concrete methods. Whereas it's not the case with interfaces.

Interface is a set of abstract methods,all the methods have 
to be overridden by the class which ever implements the 
interface. 

Abstract class is collection of data and methods,which are 
abstract. In abstact class some methods may contain 
defination,but in interface every method should be abstract
( no definations in the methods)

abstract class                       
1. abstract class have concrete methods ; interface have no 
methods implemented.
2.interface do not come in inheriting chain; abstract class 
come in inheriting chain.
3.in an interface no accessibility modifiers are allowed; 
abstract class may have accessibility modifier

Abstrat Class: It is a combination of Concrete Methods and
Abstract Methods.

Interface: Which class is only having abstract methods is
called interface.

Concrete Methods: Methods having declaration and definition

Abstrat Method: Methods having only declaration not having
any definition. Becuase abstract methods are used to provide
data abstractions(Means providing method definition and
hiding method declaration to provide security to the client).

The error which you told in your question is because you 
are trying to execute a file which is not actually 
installed on the client machine. may be you are just 
copying the files of your project on client machine. But in 
order to run your project you need to make installer of 
your project and then deploy it on client machine to make 
your executable files specific to the client platform.

If you are working with Sql Server database then provider 
specific class named sqlcommandbuilder is available with 
your sql server provider.This command will call the update 
method of datadapter object ,which will update the contents 
of your dataset and the same will be displayed in your 
datagrid ,which inturn will reflect the changes in database.

If you know sql, use UPDATE query..:-)

if dont

then 

UPDATE [TableName] SET Field1 = @param1, Field2 = @param2, 
Field3 = @param3 WHERE [ID] = @paramID

it is very simple..write insert delete update querey in
datagrid events

you need to check the following things:

1. Database size is very high and you are using query which
is not optimized.
2. you must be using too many joins in the query. Check the
execution plan
3. Confirm whether the CPU utilization is more from database
end or application end

http://www.interview-questions.maxmice.com

check if any indexes is created for that table if not 
create it. Open connection and close immediately when no 
longer in use.

As a part of Visual Studio Tool there is a tool named
Dotfuscator, using which we can remake the dll such that the
internal code is not visible.

val(textbox1.text)+val(textbox2.text)=txtbox3.text