本文整理汇总了C#中System.Data.DataTableReader.DataTableReader构造函数的典型用法代码示例。如果您正苦于以下问题：C# DataTableReader构造函数的具体用法？C# DataTableReader怎么用？C# DataTableReader使用的例子？那么, 这里精选的构造函数代码示例或许可以为您提供帮助。
在下文中一共展示了DataTableReader构造函数的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: TestConstructor
private static void TestConstructor()
{
// Create two data adapters, one for each of the two
// DataTables to be filled.
DataTable customerDataTable = GetCustomers();
DataTable productDataTable = GetProducts();
// Create the new DataTableReader.
using (DataTableReader reader = new DataTableReader(
new DataTable[] { customerDataTable, productDataTable }))
{
// Print the contents of each of the result sets.
do
{
PrintColumns(reader);
} while (reader.NextResult());
}
Console.WriteLine("Press Enter to finish.");
Console.ReadLine();
}
private static DataTable GetCustomers()
{
// Create sample Customers table, in order
// to demonstrate the behavior of the DataTableReader.
DataTable table = new DataTable();
// Create two columns, ID and Name.
DataColumn idColumn = table.Columns.Add("ID", typeof(int));
table.Columns.Add("Name", typeof(string ));
// Set the ID column as the primary key column.
table.PrimaryKey = new DataColumn[] { idColumn };
table.Rows.Add(new object[] { 1, "Mary" });
table.Rows.Add(new object[] { 2, "Andy" });
table.Rows.Add(new object[] { 3, "Peter" });
table.Rows.Add(new object[] { 4, "Russ" });
return table;
}
private static DataTable GetProducts()
{
// Create sample Products table, in order
// to demonstrate the behavior of the DataTableReader.
DataTable table = new DataTable();
// Create two columns, ID and Name.
DataColumn idColumn = table.Columns.Add("ID", typeof(int));
table.Columns.Add("Name", typeof(string ));
// Set the ID column as the primary key column.
table.PrimaryKey = new DataColumn[] { idColumn };
table.Rows.Add(new object[] { 1, "Wireless Network Card" });
table.Rows.Add(new object[] { 2, "Hard Drive" });
table.Rows.Add(new object[] { 3, "Monitor" });
table.Rows.Add(new object[] { 4, "CPU" });
return table;
}
private static void PrintColumns(DataTableReader reader)
{
// Loop through all the rows in the DataTableReader
while (reader.Read())
{
for (int i = 0; i < reader.FieldCount; i++)
{
Console.Write(reader[i] + " ");
}
Console.WriteLine();
}
}