掌握如何用ADO.NET插入新的記錄

我們學得好快，今天做一個簡易的新聞發(fā)布網頁，可以說是個演示型的，只是讓大家能理插入數(shù)據(jù)的最主要步驟。掌握今天的內容，我們就有基礎可以做一個稍有實用的新聞程序了。
為了不使注意力分散，程序沒有加入輸入的驗證，很快我會接下去寫一個驗證輸入的方法。

圖片如下：

仍用昨天的方法新建一數(shù)據(jù)表，SQL語句如下：

CREATE TABLE [dbo].[NewsArticle] ( 
[NewsArticleID] [int] IDENTITY (1, 1) NOT NULL , 
[Title] [nvarchar] (50) COLLATE Chinese_PRC_CI_AS NOT NULL , 
[SubTitle] [nvarchar] (50) COLLATE Chinese_PRC_CI_AS NULL , 
[Content] [ntext] COLLATE Chinese_PRC_CI_AS NOT NULL , 
[Writer] [nvarchar] (10) COLLATE Chinese_PRC_CI_AS NULL , 
[PubTime] [datetime] NOT NULL 
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY] 

ALTER TABLE [dbo].[NewsArticle] WITH NOCHECK ADD 
CONSTRAINT [DF_NewsArticle_PubTime] DEFAULT (getdate()) FOR [PubTime], 
CONSTRAINT [PK_NewsArticle] PRIMARY KEY CLUSTERED 
( 
[NewsArticleID] 
) ON [PRIMARY] 
GO

按昨天的方法加入頭部的語句，在提交按鈕中建立以下事件：


private void btnPublish_ServerClick(object sender, System.EventArgs e) 
{ 
string strConnection = ConfigurationSettings.AppSettings["SqlDatabase1"]; 

// 連接SqlServer數(shù)據(jù)庫 
SqlConnection conn = new SqlConnection(strConnection); 
// 建立SqlCommand 
SqlCommand cmd = conn.CreateCommand(); 
cmd.CommandText = "INSERT INTO NewsArticle (Title, SubTitle, Writer, Content) valueS (" 
+ """ + txtTitle.Text + ""," 
+ """ + txtSubTitle.Text + ""," 
+ """ + txtWriter.Text + ""," 
+ """ + txtContent.Text + "")"; 
conn.Open(); 
//Response.Write (cmd.CommandText); 

// 插入記錄 
try 
{ 
cmd.ExecuteNonQuery(); 
} 
catch (Exception ex) 
{ 
Response.Write("＜script language=javascript＞alert("輸入錯誤，數(shù)據(jù)庫不能更新。")＜/script＞"); 
} 
finally 
{ 
conn.Close(); 
} 
}