DataGridview中的数据如何导出到Excel中

下面记录一下如何将DataGridView中的数据导出到Excel中，方便以后查阅。

1、使用的编程语言是：VB.NET

2、做的系统是：机房收费系统

3、系统开发人员：黄爱岗

4、DataGridView获得数据：DataGridView1.DataSource=DataSet1.Tables(0)（注：通过查询SQL数据库将查询到的数据全部放入DataSet中，然后赋给DataGridView）

5、导出数据到Excel表：首先需要添加引用【项目（project）-添加引用（add reference）-Microsoft .Office.Interop.Excel】，其他代码如下：

Dim MyExcel As New Microsoft.Office.Interop.Excel.Application()                                     '定义并实例化Excel工作表
        MyExcel.Application.Workbooks.Add(True)                                                           '打开Excel工作簿
        MyExcel.Visible = True                                                                                     'Excel设置为可见的

        Dim Col As Integer                                                                                           '定义整型变量Col
        Try
            For Col = 0 To DataGridView1.ColumnCount – 1                                                 'Col的变化范围
                MyExcel.Cells(1, Col + 1) = Me.DataGridView1.Columns(Col).HeaderText             '添加列标题
            Next Col
        Catch ex As Exception
            MsgBox(ex.Message)             '弹出捕获的消息
            Exit Sub                              '退出程序
        End Try
       
        Dim i As Integer                       '定义整型行变量i
        Dim j As Integer                       '定义整型列变量j
        Try
            For i = 0 To DataGridView1.RowCount – 2                                                         '行变量i的取值范围
                For j = 0 To DataGridView1.ColumnCount – 1                                                 '列变量j的取值范围
                    If Me.DataGridView1(j, i).Value IsNot System.DBNull.Value Then
                        MyExcel.Cells(i + 2, j + 1) = DataGridView1(j, i).Value.ToString()              '将DataGridview中的数据添加到Excel表中
                    End If
                Next j
            Next i
            MsgBox("导出成功！")             '提示导出成功
        Catch ex As Exception
            MsgBox(ex.Message)            '弹出捕获的消息
            Exit Sub                             '退出程序
        End Try

还有个细节需要注意：dataGridView的属性里有一个allowUsersToAddRows，如果设置成FALSE则For i = 0 To DataGridView1.RowCount – 2要写成For i = 0 To DataGridView1.RowCount – 1，这样做有助于提高程序的健壮性。