C#創立、讀取和修正Excel的辦法。本站提示廣大學習愛好者：（C#創立、讀取和修正Excel的辦法）文章只能為提供參考，不一定能成為您想要的結果。以下是C#創立、讀取和修正Excel的辦法正文
本文實例講述了C#創立、讀取和修正Excel的辦法。分享給年夜家供年夜家參考。詳細以下：
windows下我們可以經由過程 Jet OLE DB拜訪Excel，就行拜訪數據庫一樣
// 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);
}
願望本文所述對年夜家的C#法式設計有所贊助。
