- // Namespaces, Variables, and Constants
- using System;
- using System.Configuration;
- using System.Data;
- private OleDbDataAdapter da;
- private DataTable dt;
- private void Excel_Load(object sender, System.EventArgs e)
- {
- // Create the DataAdapter.
- da = new OleDbDataAdapter("SELECT * FROM [Sheet1$]", ConfigurationSettings.AppSettings["ExcelConnectString1"]);
- // Create the insert command.
- String insertSql = "INSERT INTO [Sheet1$] (CategoryID, CategoryName, Description) VALUES (?, ?, ?)";
- da.InsertCommand = new OleDbCommand(insertSql, da.SelectCommand.Connection);
- da.InsertCommand.Parameters.Add("@CategoryID", OleDbType.Integer, 0, "CategoryID");
- da.InsertCommand.Parameters.Add("@CategoryName", OleDbType.Char, 15, "CategoryName");
- da.InsertCommand.Parameters.Add("@Description", OleDbType.VarChar, 100, "Description");
- // Create the update command.
- String updateSql = "UPDATE [Sheet1$] SET CategoryName=?, Description=? " WHERE CategoryID=?";
- da.UpdateCommand = new OleDbCommand(updateSql, da.SelectCommand.Connection);
- da.UpdateCommand.Parameters.Add("@CategoryName", OleDbType.Char, 15, "CategoryName");
- da.UpdateCommand.Parameters.Add("@Description", OleDbType.VarChar, 100, "Description");
- da.UpdateCommand.Parameters.Add("@CategoryID", OleDbType.Integer, 0, "CategoryID");
- // Fill the table from the Excel spreadsheet.
- dt = new DataTable( );
- da.Fill(dt);
- // Define the primary key.
- dt.PrimaryKey = new DataColumn[] {dt.Columns[0]};
- // Records can only be inserted using this technique.
- dt.DefaultView.AllowDelete = false;
- dt.DefaultView.AllowEdit = true;
- dt.DefaultView.AllowNew = true;
- // Bind the default view of the table to the grid.
- dataGrid.DataSource = dt.DefaultView;
- }
- private void updateButton_Click(object sender, System.EventArgs e)
- {
- da.Update(dt);
- }
- //该片段来自于http://www.codesnippet.cn/detail/030920135579.html
来源: http://www.codesnippet.cn/detail/030920135579.html