... let the users sort data using the
columns, you want to display a ComboBox control and let users pick a field from the
drop-drown list. How can you filter and sort records using the DataView object ...
3.4 Filter and Sort Records Using the DataView Object
After your data is loaded into the data table, you will probably want to be able to view...
... that will use the RemoveAt method of the ContextBinding object
to remove the record from the dataset. The data will then be posted back to the server.
Steps
Open the solution for the chapter ... by clicking on the button named Delete. The
record goes away, and the list is rebuilt.
1. Add a new command button under btnEdit, and then set the Name property to...
... DataSet object using the ReadXml()
method. This method reads the rows and columns from the XML file into DataTable
objects of the DataSet. For example, the following statement uses the ReadXml() ... file using the
WriteXml() method. The XML file written by this method contains the DataTable
column names and values.
You can write out the schema of a DataSet...
...
device. The terminals of the device are the gate, source, drain, and substrate.
There are two types of mosfets: the enhancement type and the depletion type.
In the enhancement type MOSFET, the ... the source and drain
has to be induced by applying a voltage on the gate. In the depletion type
mosfet, the structure of the device is such that there exists a cha...
... 200 Hz and the gain is
- 500. The pole of the voltage amplifier and level shifter is 400 KHz and has a
gain of 360. The pole of the output stage is 800KHz and the gain is 0.92.
Sketch the magnitude ... If the slew rate is lower than the rate of change of the
input signal, then the output voltage will be distorted. The output voltage will
become triangular,...
... direct band gap semiconductor.
The energy levels of the outer electrons form energy bands. In insulators, the
lower energy band (valence band) is completely filled and the next energy
band (conduction ... semiconductor, there is a shift of the Fermi level towards the edge
of the conduction band. The upward shift is dependent on how much the
doped electron density has...
... volt-
age, the diode conducts and the capacitor is charged. When the source voltage
becomes less than the output voltage, the diode is cut-off and the capacitor
discharges with the time constant
... for the current
I
D
and volt-
age
V
D
.
There are several approaches for solving
I
D
and
V
D
.
In one approach,
Equations (9.10) and (9.11) are plotted...
... Hz')
The plot of the noisy signal and its spectrum is shown in Figure 8.8. The am-
plitude of the noise and the sinusoidal signal can be changed to observe their
effects on the spectrum. ... obtain fft and plot the magnitude
z
m
and
z
p
of DFT of
x
.
The
sampling interval is
ts
. Its default value is 1. The spectra are plotted versus
the digital f...
... Equations (7.46) and 7.47) to equations (7.35) and (7.36) we have
aa
aY a
11 12
21 2 22
10
1
==
==
(7.48)
Using the describing equations, the equivalent circuits of the various two-port ... Network
In the Figure 7.15,
V
g
and
Z
g
are the source generator voltage and imped-
ance, respectively.
Z
L
is the load impedance. If we use z-parameter repre-
sentat...
... Using the Connection Object
As with ADO.NET, you will be using the Connection object to set up a connection to the
database of your choice.
As you get started looking at the different ... called btnOpenConn, and the following is the
code used for the Click event, shown here in Listing A.1.
Listing A.1 frmMain.vb: Code for Calling the Routine to Open and Displa...