如何在c#中从excel表中选择特定的列?

How can I select specific columns from excel sheet rather than all columns

如何从excel表而不是所有列中选择特定的列

string connectionString = String.Format(@"Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties=""Excel 8.0;HDR=YES;IMEX=1;""", txtPath.Text);
string query = String.Format("select * from [{0}$]", "Sheet1");
OleDbDataAdapter dataAdapter = new OleDbDataAdapter(query, connectionString);
DataSet dataSet = new DataSet();
dataAdapter.Fill(dataSet);
dataGridView1.DataSource = dataSet.Tables[0];

3 个解决方案

#1

What about:

是什么:

SELECT * FROM [Sheet1$B14:C20]

This should select cells B14 to C20.

这应该选择单元格B14到C20。

#2

This will sound trivial but this is what I understand from your question. Instead of SELECT * use SELECT [columnName1],[columnName2] FROM Sheet1.. Here columnName1 and columnName2 should be the headers of columns that you want to get from Excel Sheet.

这听起来微不足道，但这是我从你的问题中所理解的。而不是选择*使用SELECT [columnName1]，[columnName2] FROM Sheet1.在这里，columnName1和columnName2应该是您希望从Excel表中获得的列的标题。

#3

If you want to select the data before populating here is a good reference on advanced select statements. If you want to manipulate your data post populating your DataSet then here's how:

如果您想在填充之前选择数据，那么在高级select语句中有很好的参考。如果您想要操作填充数据集的数据post，那么如下方法:

DataTable myTable = dataSet.Tables[0];

var myColumn = myTable.Columns["ColumnName"];

或

var myColumn = myTable.Columns[0];

To access a single field it would look something like this.

要访问单个字段，它应该是这样的。

var field = myTable.Rows[0][myColumn];

#1