Tài liệu Replacing Null Values in a Strongly Typed DataSet ppt
Tài liệu Replacing Null Values in a Strongly Typed DataSet ppt
... Typed DataSet
Problem
When a column in a database has a null value, you want the value in the DataSet to be a
string indicating that no value is available.
Solution
Use annotations in the ... the null Description values are replaced with the string "- no description
available -". The annotations are marked in bold in Example 2-25
.
Example 2-25....
Tài liệu Controlling the Names Used in a Strongly Typed DataSet pdf
... name
Annotatio
n
DataTable TableNameDataTable typedPlural
DataTable
methods
NewTableNameRowAddTableNameRowDeleteTableNa
meRow
typedName
DataRowCollect
ion
TableName
typedPlural
DataRow TableNameRow ... typed DataSet and the default names
and available annotations for each.
Table 2-18. Default values and available annotations for elements of strongly typed
DataSet objects...
Tài liệu Modifying Data Using a Strongly Typed DataSet pptx
... Using a Strongly Typed DataSet
In Chapter 10
, you saw how to create and use a strongly typed DataSet class named
MyDataSet. You can use objects of this class to represent the Customers table ... table and rows
from that table. In this section, you'll see how to modify data using a strongly typed
object of the MyDataSet class.
Note One of the features of...
Tài liệu It’s All in a Day’s Work ppt
... same code over
and over again. I came across the same problem
when trying to create PEAR package files—the
PPEEAARR__PPaacckkaaggeeFFiilleeMMaannaaggeerr
class makes creating PEAR
ppaacckkaaggee ... look at adding a maintainer. This is where
we get into really wrapping the
PPaacckkaaggeeFFiilleeMMaannaaggeerr
class into our GTK application.
A maintainer is someone who contributes to a...
Tài liệu VB .NET Language in a Nutshell pdf
...
offered a graphical interface that was suitable for Windows applications, VB .NET and Visual
Studio .NET aim at providing a graphical interface that is suitable for developing web applications and ... language and a graphical interface design program developed in part by Alan
Cooper. Since then, it has become by far the most popular programming language in the world, with
an ins...
Tài liệu It’s All in a Day’s Work docx
... look at adding a maintainer. This is where
we get into really wrapping the
PPaacckkaaggeeFFiilleeMMaannaaggeerr
class into our GTK application.
A maintainer is someone who contributes to a PEAR
package. ...
ddoocc
directory that contains rather detailed infor-
mation about the package. Thankfully, the package can
be used in a straightforward manner. Again, it’s just a
matter of...
Tài liệu Chapter 1 - Living in a Network Centric World CCNA Exploration 4.0 pptx
... safe and productive manner.
• Online courseware and delivery offer many benefits to businesses such as:
– Current and accurate training materials.
– Availability of training to a wide audience.
– ... resources are often called online
learning experiences, or e-learning.
• Online courses can contain voice, data, and video, and are available to the
students at any time from any place.
Học...
Tài liệu Finding DataRowView Objects in a DataView docx
... SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter();
mySqlDataAdapter.SelectCommand = mySqlCommand;
DataSet myDataSet = new DataSet( );
mySqlConnection.Open();
mySqlDataAdapter.Fill(myDataSet, ...
Because BSBEV 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...
Tài liệu Accessing Deleted Rows in a DataTable pptx
... version of each row is retrieved by default when accessing rows in a
DataTable or in a DataView. The solution demonstrates an approach for getting Deleted
rows from both a DataTable and a DataView. ... DataTable, use an overload of the Select( ) method of
the DataTable to return an array of deleted DataRow objects. The overload accepts an
argument having a DataViewRowState e...
Tài liệu Passing Null Values to Parameters ppt
... missing or nonexistent data, typically in a database,
while null and Nothing indicate that an object or variable has not yet been initialized.
Passing a null parameter value into a stored procedure ... shown in Example 2-18
, uses a single stored procedure:
SP0214_NullParameter
Accepts a single parameter and a returns one-row result set containing a single
value ind...
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