finding duplicate rows in datatable c
Tài liệu Finding, Filtering, and Sorting Rows in a DataTable ppt
Ngày tải lên :
14/12/2013, 13:15
... "ProductID DESC",
DataViewRowState.OriginalRows);
foreach (DataRow myDataRow in productDataRows)
{
foreach (DataColumn myDataColumn in productsDataTable.Columns)
{
Console.WriteLine(myDataColumn ... ProductID of 3");
DataRow productDataRow = productsDataTable .Rows. Find("3");
foreach (DataColumn myDataColumn in productsDataTable.Columns)
{
Console.WriteLine(myDataColumn ... System.Data.SqlClient;
class FindFilterAndSortDataRows
{
public static void Main()
{
SqlConnection mySqlConnection =
new SqlConnection(
"server=localhost;database=Northwind;uid=sa;pwd=sa"...
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Tài liệu Finding Rows in a DataTable ppt
Ngày tải lên :
26/01/2014, 10:20
... the collection of rows filtered in the previous step
// and find them in the table using the Find( ) method of the
// DataRowCollection for the DataTable.
int findCount = 0;
foreach(DataRow ... row in drc)
{
DataRow foundRow = dt .Rows. Find(row[ORDERID_FIELD]);
if (foundRow != null)
findCount++;
}
resultTextBox.Text += " ;DataTable .Rows. Find returned " + findCount ... DataRow objects
matching the specified filter criteria. By default, the rows in the array are ordered
by the primary key or, lacking a primary key, by the order in which the rows were
added to...
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Tài liệu Accessing Deleted Rows in a DataTable pptx
Ngày tải lên :
14/12/2013, 18:16
... been changed since it was loaded or since
AcceptChanges( ) was last called.
When AcceptChanges( ) is called on the DataSet, DataTable, or DataRow, either
explicitly or implicitly by calling ... the sample by creating a DataTable containing Orders data from
Northwind. A view containing the Current rows is bound to a data grid on the
form.
Current Rows RadioButton.CheckedChanged
Sets ... the sample by creating a DataTable containing Orders data from
Northwind. A view containing the Current rows is bound to a data grid on the
form.
Current Rows RadioButton.CheckedChanged
Sets...
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Tài liệu Selecting the Top n Rows in a DataTable doc
Ngày tải lên :
14/12/2013, 18:16
... making non-numeric comparisons in the
filter expression.
At this point, we are done unless there can be more than one instance of the value in the
nth record, as is the case with Freight. In ... columns, this
can be used in the initial data view filter to limit returned records in cases where there
might be duplicate values in the nth record. This would be used instead of the technique
just ... this places
[ Team LiB ]
Recipe 3.10 Selecting the Top n Rows in a DataTable
Problem
You want to create a grid that shows the t op five rows in a DataTable, based on the
values in one...
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Tài liệu Finding Rows in a DataView doc
Ngày tải lên :
14/12/2013, 18:16
... by nothing, or ASC for an ascending sort, or by DESC for
a descending sort. Use commas to separate multiple sort column names.
Both the Find( ) and FindRows( ) methods take a single input argument. ... between the Find( ) and FindRows( ) methods is that Find( )
returns the zero-based index of the first row that matches the search criteria (or -1 if no
match is found) while FindRows( ) returns ... is an object
value if the DataView is sorted on a single column or an array of objects containing
values for all of the columns defined by the Sort property in the same order as specified
by...
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Tài liệu Modifying Rows in a DataTable phần 1 ppt
Ngày tải lên :
24/12/2013, 01:17
...
Concurrency
Concurrency determines how multiple users' modifications to the same row are handled.
There are two types of concurrency that apply to a DataSet:
•
Optimistic Concurrency ... concurrency, you can
always modify a row-and your changes overwrite anyone else's changes. You
typically want to avoid using "last one wins" concurrency.
To use optimistic concurrency, ... optimistic concurrency, you can modify a row in a
database table only if no one else has modified that same row since you loaded it
into your DataSet. This is typically the best type of concurrency...
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Tài liệu Modifying Rows in a DataTable phần 2 docx
Ngày tải lên :
24/12/2013, 01:17
...
mySqlConnection.Open();
int numOfRows = mySqlDataAdapter.Update(myDataTable);
mySqlConnection.Close();
Console.WriteLine("numOfRows = " + numOfRows);
Console.WriteLine("myNewDataRow.RowState ... explicitly include the Open() and
Close() calls so that you can see exactly what is going on.
Note In the ADO.NET disconnected model of data access, you should typically keep the
connection to ... database
Console.WriteLine("Calling mySqlDataAdapter.Update()");
mySqlConnection.Open();
int numOfRows = mySqlDataAdapter.Update(myDataTable);
mySqlConnection.Close();
Console.WriteLine("numOfRows...
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MAKING A CHART OF THE ENERGY CONSUMPTION IN H.C.M. CITY
Ngày tải lên :
22/07/2013, 01:27
... Q5
ACTION PLAN
MAKING A CHART OF THE
ENERGY CONSUMPTION IN
H .C. M. CITY
ACTIVITIES
All Ss .in each group should do their
real assignement to be able to collect
the own amounts of the city ... duty
Completing the group’s duty
7
7
Having the creative combination’s
Having the creative combination’s
ideas
ideas
+1
+1
Having plenty of properly
Having plenty of properly
illustrated pictures
illustrated ... without
being applied for live society.
•
Interactive learning is impossible without
pairworks and groupworks. And learning
or teaching in the 21st century must
always be put in the 4L situation...
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Tài liệu Finding DataRowView Objects in a DataView docx
Ngày tải lên :
14/12/2013, 13:15
...
class FindingDataRowViews
{
public static void Main()
{
SqlConnection mySqlConnection =
new SqlConnection(
"server=localhost;database=Northwind;uid=sa;pwd=sa"
);
SqlCommand ... occurs at index 1, the Find() method returns 1.
Note DataRowView objects in a DataView start at index 0. Therefore, BSBEV occurs at
index 1.
Finding DataRowView Objects Using the FindRows() ... match, the customersDRVs array will contain one DataRowView.
Listing 13.2
shows a program that uses the Find() and FindRows() methods.
Listing 13.2: FINDINGDATAROWVIEWS.CS
UK
CONSH
Consolidated...
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Tài liệu Adding, Updating, and Deleting Related Rows In this section, you''''ll learn how to make changes in docx
Ngày tải lên :
24/12/2013, 01:17
... SqlCommand objects previously created
customersDA.SelectCommand = customersSelectCommand;
customersDA.InsertCommand = customersInsertCommand;
customersDA.UpdateCommand = customersUpdateCommand; ... Orders";
// create a SqlCommand object to hold the INSERT
SqlCommand ordersInsertCommand = mySqlConnection.CreateCommand();
ordersInsertCommand.CommandText =
"INSERT INTO Orders (" ...
customersUpdateCommand.Parameters["@OldCompanyName"].SourceVersion =
DataRowVersion.Original;
// create a SqlCommand object to hold the DELETE
SqlCommand customersDeleteCommand = mySqlConnection.CreateCommand();
customersDeleteCommand.CommandText...
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Tài liệu Add and Delete Rows in a Dataset with ADO.NET pdf
Ngày tải lên :
21/01/2014, 12:20
... "Customers")
89. mdsCustIndiv.Tables("Customers").AcceptChanges()
90.
91. ' Close the connection
92. If mblnAdd Then
93. modaCustIndiv.InsertCommand.Connection.Close() ... following code to the Click event btnCancel.
105. Private Sub btnCancel_Click(ByVal sender As System.Object, _
106. ByVal e As System.EventArgs) Handles btnCancel.Click
107.
108.
' Cancel ... mdsCustIndiv.Tables("Customers").AcceptChanges()
138.
139. ' Close the connection
140. modaCustIndiv.DeleteCommand.Connection.Close()
141.
142. Catch excData As Exception
143. MessageBox.Show("Error...
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Tài liệu Programming in Objective-C - Fourth Edition ppt
Ngày tải lên :
18/02/2014, 12:20
... 429
Using NSData to Create Custom Archives 436
Using the Archiver to Copy Objects 439
Exercises 441
20 Introduction to Cocoa and Cocoa Touch 443
Framework Layers 443
Cocoa Touch 444
21 Writing ... language source file
.cc, .cpp C+ + language source file
.h Header file
.m Objective -C source file
.mm Objective -C+ + source file
.pl Perl source file
.o Object (compiled) file
Objective -C source files ... about its initial
characteristics acquired from the factory, but also its current characteristics.Those charac-
teristics can change dynamically.As you drive your car, the gas tank becomes depleted,...
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Tài liệu Báo cáo khoa học: Novel aggregate formation of a frame-shift mutant protein of tissue-nonspecific alkaline phosphatase is ascribed to three cysteine residues in the C-terminal extension pdf
Ngày tải lên :
19/02/2014, 17:20
... quality control
system, namely a Man
8
GlcNAc
2
-binding lectin
(EDEM) [29,30], and SCF
Fbs2
ubiquitin ligase com-
plex, which specifically targets N-linked high-mannose-
type oligosaccharide chains ... each plasmid using
Lipofectamine Plus according to the manufacturer’s proto-
col as described previously [13,14] and the transfected cells
were incubated for 24 h in 5% CO
2
⁄ 95% air (v ⁄ v) incuba-
tor ... the manufacturer’s protocol. Transcrip-
tion ⁄ translation was carried out with [
35
S]methionine ⁄ cys-
teine at 30 C for 90 min in the absence or presence of
canine pancreatic microsomal membrane...
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Báo cáo khoa học: Glutamic acid residues in the C-terminal extension of small heat shock protein 25 are critical for structural and functional integrity pptx
Ngày tải lên :
07/03/2014, 04:20
... Protein precipitation was monitored by light
scattering at 360 nm. Assays were performed in duplicate.
The precipitation of 45 lm insulin from bovine pancreas in
the presence of increasing concentrations ... on pro-
teins that contain exposed clusters of hydrophobic ami-
noacyl residues, resulting in an increase in fluorescence
[39]. ANS binding fluorescence of wild-type and mutant
Hsp25 reached a maximum ... decrease
in polarity of the C- terminal extension may also facili-
tate interaction between the extension and hydro-
phobic chaperone binding sites, resulting in the
binding sites being less accessible...
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