本文整理汇总了C#中DataRow.IsNull方法的典型用法代码示例。如果您正苦于以下问题:C# DataRow.IsNull方法的具体用法?C# DataRow.IsNull怎么用?C# DataRow.IsNull使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类DataRow
的用法示例。
在下文中一共展示了DataRow.IsNull方法的4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: WhenNullValueAtColumn_ThenIsNullReturnsTrue
public void WhenNullValueAtColumn_ThenIsNullReturnsTrue()
{
string columnName = "Col 1";
List<string> columns = new List<string> { columnName };
DataRow target = new DataRow(columns);
target[columnName] = null;
bool result = target.IsNull(columnName);
Assert.True(result);
Assert.Equal(1, target.Data.Count);
}
示例2: WhenNullValueAtIndex_ThenIsNullReturnsTrue
public void WhenNullValueAtIndex_ThenIsNullReturnsTrue()
{
List<string> columns = new List<string> { "col1" };
DataRow target = new DataRow(columns);
target[0] = null;
bool result = target.IsNull(0);
Assert.True(result);
Assert.Equal(1, target.Data.Count);
}
示例3: WhenColumnNameInvalid_ThenThrowsInvalidColumnNameException
public void WhenColumnNameInvalid_ThenThrowsInvalidColumnNameException()
{
List<string> columns = new List<string> { "col1" };
DataRow target = new DataRow(columns);
Assert.Throws<InvalidColumnNameException>(() =>
{
target.IsNull("Column 2");
});
}
示例4: WhenColumnIndexTooHigh_ThenThrowsInvalidColumnIndexException
public void WhenColumnIndexTooHigh_ThenThrowsInvalidColumnIndexException()
{
List<string> columns = new List<string> { "col1" };
DataRow target = new DataRow(columns);
Assert.Throws<InvalidColumnIndexException>(() =>
{
target.IsNull(1);
});
}