在你的例子中，你缺少对象初始化，见下文：

Hi,

In your example you are missing object initialization, see below:

DataTable[] studentsTable = new DataTable[10];
studentsTable[0] = new  DataTable();                      // you are missing this.
studentsTable[0].Columns.Add("Name", typeof(string));
studentsTable[0].Columns.Add("ID", typeof(string));
studentsTable[0].Columns.Add("Dob", typeof(string));

一个建议是，如果所有数据表数组都有相同的列，则使用for循环添加列名。

One suggestion is that if all array of datatable have same column then use for loop to add column name.

for(int i=0;i< studentsTable.Length;i++)
{
   studentsTable[i] = new  DataTable();
   studentsTable[i].Columns.Add("Name", typeof(string));
   studentsTable[i].Columns.Add("ID", typeof(string));
   studentsTable[i].Columns.Add("Dob", typeof(string));
}

希望它有所帮助。

Hope it helps.

这是一个如何向数据表添加列的示例对象： DataTable Class [ ^ ]



如果每个数据表的列相同，我建议您创建一个数据表，然后将其添加10次到列表< T> [ ^ ]泛型类，如果没有，根据需要多次创建和添加数据表。为什么列出< T> 泛型类，而不是数组？因为它表示可以通过索引访问的强类型对象列表;提供搜索，排序和操作列表的方法。

Here is an example how to add columns to a datatable object: DataTable Class[^]

If the columns for each datatable are the same, i would suggest you to create one datatable, then to add it 10 times to List<T>[^] generic class, if not, create and add datatable as many times as you need. Why List<T> generic class, instead array? Because it represents a strongly typed list of objects that can be accessed by index; provides methods to search, sort, and manipulate lists.