本文整理汇总了C#中System.Data.DataColumn.DataColumn构造函数的典型用法代码示例。如果您正苦于以下问题：C# DataColumn构造函数的具体用法？C# DataColumn怎么用？C# DataColumn使用的例子？那么恭喜您, 这里精选的构造函数代码示例或许可以为您提供帮助。您也可以进一步了解该构造函数所在类System.Data.DataColumn的用法示例。
在下文中一共展示了DataColumn构造函数的5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: AddDataColumn
private void AddDataColumn(DataTable table)
{
DataColumn column = new DataColumn();
// Set various properties.
column.ColumnName = "id";
column.DataType = System.Type.GetType("System.Int32");
column.AutoIncrement = true;
column.AutoIncrementSeed = 1;
column.AutoIncrementStep = 1;
column.ReadOnly = true;
// Add to Columns collection.
table.Columns.Add(column);
}示例2: AddDataColumn
private void AddDataColumn(DataTable table)
{
DataColumn column = new DataColumn("id");
// Set various properties.
column.DataType = System.Type.GetType("System.Int32");
column.AutoIncrement = true;
column.AutoIncrementSeed = 1;
column.AutoIncrementStep = 1;
column.ReadOnly = true;
// Add to Columns collection.
table.Columns.Add(column);
}示例3: AddDataColumn
private void AddDataColumn(DataTable table)
{
System.Type typeInt32 =
System.Type.GetType("System.Int32");
DataColumn column = new DataColumn("id", typeInt32);
// Set various properties.
column.AutoIncrement = true;
column.AutoIncrementSeed = 1;
column.AutoIncrementStep = 1;
column.ReadOnly = true;
// Add to Columns collection.
table.Columns.Add(column);
}示例4: AddDataColumn
private void AddDataColumn(DataTable table)
{
System.Type decimalType;
decimalType = System.Type.GetType("System.Decimal");
// Create the column. The name is 'Tax,' with data type Decimal,and
// an expression ('UnitPrice * .0862) to calculate the tax.
DataColumn column = new DataColumn("Tax",
decimalType, "UnitPrice * .0862");
// Set various properties.
column.AutoIncrement = false;
column.ReadOnly = true;
// Add to Columns collection.;
table.Columns.Add(column);
}示例5: CreateComputedColumn
private void CreateComputedColumn(DataTable table)
{
System.Type myDataType =
System.Type.GetType("System.Decimal");
// The expression multiplies the "Price" column value
// by the "Quantity" to create the "Total" column.
string expression = "Price * Quantity";
// Create the column, setting the type to Attribute.
DataColumn column = new DataColumn("Total", myDataType,
expression, MappingType.Attribute);
// Set various properties.
column.AutoIncrement = false;
column.ReadOnly = true;
// Add the column to a DataTable object's to DataColumnCollection.
DataSet1.Tables["OrderDetails"].Columns.Add(column);
}