C#实现Access导入导出Excel
一、Access从Excel中导入数据
1.用到的Excel表的格式及内容
实现
OleDbConnection con = new OleDbConnection();
try
{
OpenFileDialog openFile = new OpenFileDialog();//打开文件对话框。
openFile.Filter = ("Excel 文件(*.xls)|*.xls");//后缀名。
if (openFile.ShowDialog() == DialogResult.OK)
{
string filename = openFile.FileName;
int index = filename.LastIndexOf("\\");//截取文件的名字
filename = filename.Substring(index + 1);
conExcel.ConnectionString = "Provider=Microsoft.Jet.Oledb.4.0;Data Source=" +
Application.StartupPath + "\\Appdata.mdb";
//将excel导入access
//distinct :删除excel重复的行.
//[excel名].[sheet名] 已有的excel的表要加$
//where not in : 插入不重复的记录。
string sql = "insert into Users2(用户编号,用户姓名) select distinct * from [Excel 8.0;database=" +
filename + "].[name$] where 用户编号 not in (select 用户编号 from Users2) ";
OleDbCommand com = new OleDbCommand(sql, con);
con.Open();
com.ExecuteNonQuery();
MessageBox.Show("导入数据成功", "导入数据", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
finally
{
con.Close();
}
二、Access导出Excel
OleDbConnection con = new OleDbConnection();
try
{
SaveFileDialog saveFile = new SaveFileDialog();
saveFile.Filter = ("Excel 文件(*.xls)|*.xls");//指定文件后缀名为Excel �
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