performing transactions by using the transaction object

... are discussed in the Technique section Listing 3.2 frmHowTo3_1.vb: Loading a List Box By Using the DataReader Object Private Sub btnLoadList_Click(ByVal sender As System .Object, _ ByVal e As System.EventArgs) ... object in the single statement This is new to NET and is extremely useful How It Works When the user clicks the btnLoadList button, the Command object is assigned the necessary properties, the connection ... opened, and the ExecuteReader method is called After the list has been cleared, the DataReader is iterated through, and the ListBox control is loaded Comments The DataReader object is one of the most...

Ngày tải lên: 14/12/2013, 20:16

... data table sets up the scene for using the list box in retrieving data in the next How-To Remember: By using the DataTable object, you can assign both the display value and the data item to be ... introduced in the first How-To in this chapter The data table is then filled, and then the DataSource, DisplayMember, and ValueMember properties of the ListBox control are assigned Comments Using the data ... code Listing 3.3 frmHowTo3_2.vb: Loading a List Box By Using the DataTable Object Private Sub btnLoadList_Click(ByVal sender As System .Object, ByVal e As System.EventArgs) Handles btnLoadList.Click...

Ngày tải lên: 26/01/2014, 11:20

Ngày tải lên: 21/09/2013, 05:29

... assign it to the results text box If you are using a bulk query, shown in the next section, you would use the Execute method To see the routine in A.8 executed, click on the button with the caption ... MessageBox.Show(excp.Message) End Try End Sub The last thing that this routine does is open a recordset based on the Command object This is to the use just those records that are needed In this case, the GetString method ... A.8 executed, click on the button with the caption Stored Procedure with Parameter, located on the frmMain form for this Appendix project ...

Ngày tải lên: 14/12/2013, 20:16

... Listing A.3 provides two other examples of using the connection object, also found in basConnectionExamples.vb The first is code to open a connection to a Jet database by using a workgroup file, ... from this example, using the ADO Connection object is virtually the same as ADO.NET You can see this example being executed in Figure A.4 Figure A.4 The text displayed here is the connection string ... Each of the buttons calls examples, passing the text box called txtCurrentResults This text box is located at the bottom of the form For clarity, the examples have been grouped in modules by section...

Ngày tải lên: 14/12/2013, 20:16

... to the current column name chosen in cboSortColumns If the two are the same, then the column name is assigned to the Sort property with the DESC keyword added on If not, then the name of the ... matches, then the expression DESC is added to the value that is assigned to the Sort property Steps Open and run the VB.NET-Chapter solution From the main form, click on the command button with the ... row The Sort property of the DataView object is used when a column name is chosen from the ComboBox The current setting of the Sort property is compared to the column name that is chosen If the...

Ngày tải lên: 21/01/2014, 12:20

... In the rainy season, on the contrary, the months with the highest increase are from September to November with 10-18% in Da Nang, 11-20% in Quy Nhon and 13-23% in Can Tho; the months with the ... software need more consideration In the study, the temperature and rainfall scenarios are built in the monthly form of decades of the 21st century However, within the scope of this paper, we only ... 1) have been tested for the statistic reliability through: + Assumption testing the magnitude of the correlation coefficient Rxy + Assumption testing the magnitude of the coefficient of regression...

Ngày tải lên: 05/03/2014, 16:20

... as the pig, which is one of the reasons for the choice of the model in this study Other difficulties arise from the proximity of high or moderate-uptake regions such as the kidney cortex, the ... examination performed 90 after the tracer administration Initially, the accumulation of the tracer in the bone was low and showed a linear increase at the end of the experiments; the spinal column reached ... [18F]FE-DTBZ-d4 was confirmed by co-injection with the authentic nonradioactive FE-DTBZd4 Specific radioactivity determination The specific radioactivity [SRA] of the product was measured by the same analytical...

Ngày tải lên: 20/06/2014, 21:20

... is also possible to realize that the longer the portion of AC-Fe, the higher the adsorbent cost Therefore, optimizing the AC-Fe portion in the column is one of the key factors for a feasible arsenic ... the bed is decreased resulting to shorter contact between the feed and the adsorbent In addition, the higher the flow rate, the smaller the film resistance, implying that arsenic adsorption by ... ratio, the value of V/WACFe (V, the volume of drinkable water produced from the start using adsorbents until breakthrough / WACFe, the weight of AC-Fe in the column) was calculated and found that the...

Ngày tải lên: 05/09/2013, 09:38

... The connection is then open Finally, the command is executed with the ExecuteNonQuery method, with the ToString passing back the number of records that were affected to the Text property of the ... txtRecsAffected Enter the following code to the Click event btnExecute When the command is instantiated in this case, the string in the txtSQL text box is passed as the CommandText The CommandType ... Comments The Command object is a real workhorse when it comes to performing bulk operations, whether working with store procedures already created or when using statements that have been created on -the- fly...

Ngày tải lên: 07/11/2013, 15:15

... program then creates instances of the class, in the form of an object • Objects can collaborate with each other, by calling each other’s methods • The data in an object is encapsulated - only the object ... wouldn’t be the end of the world if the receipt wasn’t dispensed Apply the rule to the other Use Cases, and you’ll find that really, none of them describe the goal of the user The goal of the user ... completed by If an iteration is not complete by the end of the timebox, the iteration ends anyway The crucial activity associated with timeboxing is the review at the end of iteration The review...

Ngày tải lên: 10/12/2013, 14:16

... of the text as they can recall, they generally 17 remember some bits of the text and forget others By and large, they can not fulfill the tasks if they focus on linguistic items rather than the ... like the follow-up stage After students have practiced the target skill in the while-listening stage, they an extension This helps them take the information or whatever they have produced in the ... and other meaningful activities There are two common forms that post-listening tasks can take They are reactions to the content of the text, and analysis of the linguistic features Therefore, the...

Ngày tải lên: 05/02/2014, 22:02

... determinate the annual gamma dose in thermoluminesccence dating In the consistency with the experimental results it was shown that the more accurate the beta dose evaluation is, the more reliable is the ... of thermoluminecence dating [5,6] Fig the measurement of the gamma dose rate using the radiometer CΡΠ-68-01 This paper presents a new method to evaluate the annual beta dose (Dβ )by measuring the ... comparison between the obtained thermoluminescence ages and the radiocarbon ages is presented on the Figure The results in Figure indicate that, the TL ages of ancient pottery determined by the quartz...

Ngày tải lên: 13/02/2014, 04:20

... is done with the aim to determine the DTM area and the distribution of pickets, which will be measured in the next step The grids are placed in the central area of the stereo models The distances ... to 1600dpi (16µm) by using photogrammetric scanner ZEISS SCAI - Project assembling: the main purpose of this step is to distribute airphotos by strips as they were shot in the field - Ground ... discover the errors generated by the previous step since the image matching technique does not ensure 100% reliability There are still some incorrectly measured pickets, especially in the areas...

Ngày tải lên: 13/02/2014, 12:20

... describe the process of word generation from the left to the right by alternately using two dice, the first for deciding whether to place a morpheme boundary in the current word position and the second ... idea to the test in the following section 3.3 mance can be analysed more informatively using these kinds of curves The PR curve is plotted with recall on the x-axis and precision on the y-axis ... values the isometrics are moving further to the top-right corner of the plot For a threshold of h = 0.50 (marked by ‘3’) P ROMODES -H has a better performance than P ROMODES Nevertheless, across the...

Ngày tải lên: 20/02/2014, 04:20

... the number of the carbon to which they are attached In Figure 2, the substituent CH3 is assigned the number • The name of the compound is now composed of the name of the main chain preceded by ... background [21] In the later ones, the difficult consists on finding the appropriate words in the object language that represent the same meaning expressed in the words of the sentence in the source ... simplify the example and the comprehension of the analysis, the authors present in the qualia structures just the elements that are essential to explain the parsing process Throughout the analysis, the...

Ngày tải lên: 05/03/2014, 20:20

... evaluating the trend of the questionnaire answers of each expert whether they replied in the same direction If so, the questionnaire item would be included in the closed-ended questionnaire Experts, then, ... answers of the experts with a five-point scale which is the same definition as in the second round questionnaire but adding the value of the median and ranges between the quartile The purpose ... have the experts group compare and confirm their opinions in the second round questionnaire The data processing gives the ranges between 0-1 quartile indicating the result accuracy which led to the...

Ngày tải lên: 05/03/2014, 23:20

... 1985 to 95.2% in 2002. The population growth  causing  population  overload  in  the city  has  been  shown  not  only  by the natural  increase  on  the spot,  but  also  by the mechanical  movement from other provinces.   ... whole  city,  the land  transformation  was  realized  mainly  in  the northern  part  of  the city  as  shown  by the results  from  remote  sensing  data.  Fig.  3  shows  that  the dense  ... determination.  The confusion  matrix  was  calculated  for  the study  area  after  masking  the unnecessary outside. The overall accuracy  was about 88% for the year of 1989, and 86%  for  2002.  Then, ...

Ngày tải lên: 14/03/2014, 15:20

... designed using the software siRNA Target Designer (Promega, Madison, WI, USA) The preparation of the RNAi vector expressing the human ADAM 10 short hairpin RNA (shRNA) was performed using the pSuper ... Giemsa Cells on the upper surface of the filter were removed by wiping with a cotton swab, and invasion was determined by counting the cells that migrated to the lower side of the filter with ... to the standards of animal care as outlined in the Guide for the Care and Use of Experimental Animals of the Medical College of Shanghai Jiaotong University The study protocol was approved by the...

Ngày tải lên: 18/06/2014, 16:20