Xem 1-20 trên 654 kết quả Columns
  • [ Team LiB ] Recipe 7.10 Creating Custom Columns in a Windows Forms DataGrid Problem You need to create a DataGrid having columns with custom formatting and attributes. Solution Use the DataGridTableStyle class. The sample code contains two event handlers

    pdf4p luvpro 04-08-2010 70 15   Download

  • [ Team LiB ] Recipe 2.16 Mapping Table and Column Names Between the Data Source and DataSet Problem You want to control the names assigned to tables and columns when you fill a DataSet using a DataAdapter.

    pdf3p luvpro 04-08-2010 53 10   Download

  • [ Team LiB ] Recipe 6.8 Creating Constraints, PrimaryKeys, Relationships Based on Multiple Columns Problem You need to create a constraint, primary key, or a relationship between two tables in a DataSet using more than one column. Solution Use the System.Data.

    pdf6p luvpro 04-08-2010 53 8   Download

  • [ Team LiB ] Recipe 8.9 Formatting Column Values When Outputting Data as XML Problem You need to save some of the columns in a DataTable as attributes instead of elements when you write out the data as XML. Solution Use the ColumnMapping property.

    pdf3p luvpro 04-08-2010 37 7   Download

  • [ Team LiB ] Recipe 3.2 Using Expression Columns to Display Calculated Values Problem You need to display a calculated value for each row in a DataTable and to filter and sort the table on this value. Solution Add an expression column to the table and display it.

    pdf4p luvpro 04-08-2010 40 7   Download

  • Using the Get* Methods to Read Column Values Before I show you the other Get* methods that read column values, you need to know the standard C# types and the values they support

    pdf3p daisuphu 29-07-2010 68 6   Download

  • Mapping Tables and Columns In Chapter 3, "Introduction to Structured Query Language (SQL)," you learned that the AS keyword is used to specify an alias for a table or column.

    pdf4p suadaunanh 03-08-2010 50 6   Download

  • [ Team LiB ] Recipe 2.17 Displaying Columns from a Related DataTable Problem You want to add a column to a DataTable that displays a value from a row in a related table in the DataSet. Solution Use expression columns to retrieve lookup values based on DataRelation objects.

    pdf4p luvpro 04-08-2010 31 6   Download

  • [ Team LiB ] Recipe 10.4 Determining the Length of Columns in a SQL Server Table Problem The FillSchema( ) method of the DataAdapter returns the correct length in the MaxLength property for string columns in a SQL Server database, but it returns -1 for the length of all other fields.

    pdf4p luvpro 04-08-2010 63 6   Download

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    pdf32p beobobeo 01-08-2012 26 6   Download

  • 1.6. Column View The goal of column view is simple: to let you burrow down through nested folders without leaving a trail of messy, overlapping windows in your wake.

    pdf4p kisiheo 26-07-2010 41 5   Download

  • Reading a Column Value Using Strongly Typed DataSet Classes A strongly typed DataSet object allows you read a column value using a property with the same name as the column.

    pdf7p daisuphu 29-07-2010 43 5   Download

  • Retrieving New Identity Column Values The ProductID column of the Products table is an identity column. In this section, you'll see how to insert a new row into to Products table

    pdf3p daisuphu 29-07-2010 43 5   Download

  • [ Team LiB ] Recipe 9.7 Improving DataReader Performance with Column Ordinals Problem You want to use column ordinals rather than column names to retrieve data from a DataReader to improve application performance and without hard-coding

    pdf4p luvpro 04-08-2010 49 5   Download

  • [ Team LiB ] Recipe 6.7 Enforcing Business Rules with Column Expressions Problem You need to enforce a business rule based on multiple columns in a table at the user interface tier. Solution Use expression-based columns to enforce business rules at the user interface tier.

    pdf9p luvpro 04-08-2010 46 5   Download

  • [ Tam LiB ] Recipe 10.3 Retrieving Column Default Values from SQL Server Problem The DataColumn object exposes a Default property. While the FillSchema( ) method of the DataAdapter returns schema information, it does not include the default values for columns.

    pdf3p luvpro 04-08-2010 46 5   Download

  • Getting SQL Server Column Metadata Without Returning Data Problem You need to retrieve the column metadata from a SQL Server command or stored procedure without returning any data.

    pdf2p luvpro 04-08-2010 53 5   Download

  • [ Team LiB ] Recipe 4.1 Using Auto-Incrementing Columns Without Causing Conflicts Problem You want to use an AutoIncrement column in a table without producing values that may be duplicated in records added by other users. Solution Use the AutoIncrementSeed and AutoIncrementStep properties of the AutoIncrement column.

    pdf3p luvpro 04-08-2010 41 4   Download

  • [ Team LiB ] Recipe 4.2 Getting an Identity Column Value from SQL Server Problem When you add a row into a SQL Server table that has an identity column,

    pdf6p luvpro 04-08-2010 59 4   Download

  • [ Team LiB ] Recipe 3.7 Using Expression Columns to Display Aggregate Values Problem You want to add summary information such as averages, sums, and counts to a table based on related child rows. Solution Use expression columns to perform aggregate calculations based on child rows.

    pdf3p luvpro 04-08-2010 44 4   Download

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