在vb.net中用OLEDB从Excel导入到datagridview

在vb.net中使用OLEDB从Excel导入到DataGridView，可以通过以下步骤实现：

引用必要的命名空间：

Imports System.Data.OleDb

创建连接字符串：

Dim connectionString As String = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=<Excel文件路径>;Extended Properties='Excel 12.0 Xml;HDR=YES;'"

请将<Excel文件路径>替换为实际的Excel文件路径。

创建连接对象并打开连接：

Using connection As New OleDbConnection(connectionString)
    connection.Open()
    ' 执行后续操作
End Using

执行查询并获取数据：

Dim query As String = "SELECT * FROM [Sheet1$]"
Using command As New OleDbCommand(query, connection)
    Using adapter As New OleDbDataAdapter(command)
        Dim dataTable As New DataTable()
        adapter.Fill(dataTable)
        ' 将数据绑定到DataGridView
        DataGridView1.DataSource = dataTable
    End Using
End Using

请将Sheet1替换为实际的工作表名称。

完整的示例代码如下：

Imports System.Data.OleDb

Public Class Form1
    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        Dim connectionString As String = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=<Excel文件路径>;Extended Properties='Excel 12.0 Xml;HDR=YES;'"
        Using connection As New OleDbConnection(connectionString)
            connection.Open()
            Dim query As String = "SELECT * FROM [Sheet1$]"
            Using command As New OleDbCommand(query, connection)
                Using adapter As New OleDbDataAdapter(command)
                    Dim dataTable As New DataTable()
                    adapter.Fill(dataTable)
                    DataGridView1.DataSource = dataTable
                End Using
            End Using
        End Using
    End Sub
End Class

请将<Excel文件路径>替换为实际的Excel文件路径。

这样，当点击按钮时，将会从Excel文件中读取数据，并将其显示在DataGridView控件中。

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