ado.net存取word及excel

字號:


    blob表
    3 id int 4 0
    0 name char 50 1
    0 blob image 16 1
    0 type char 60 1
    saveFile.aspx.cs
    PRivate void Button1_Click(object sender, System.EventArgs e)
    {
    Stream imgdatastream = File1.PostedFile.InputStream;
    int imgdatalen = File1.PostedFile.ContentLength;
    string imgtype = File1.PostedFile.ContentType;
    string name = this.getFileNameByURL(this.File1.PostedFile.FileName);
    byte[] imgdata = new byte[imgdatalen];
    int n = imgdatastream.Read(imgdata,0,imgdatalen);
    string connstr = "workstation id=OVERMIND;packet size=4096;user id=sa;passWord=sa;data source=OVERMIND;persist security info=False;initial catalog=wztj";
    SqlConnection connection = new SqlConnection(connstr);
    SqlCommand command = new SqlCommand("INSERT INTO blob(name,type,blob) VALUES ( @imgtitle, @type,@blob )", connection );
    SqlParameter paramTitle = new SqlParameter("@imgtitle", SqlDbType.VarChar,50 );
    paramTitle.Value = name;
    command.Parameters.Add(paramTitle);
    SqlParameter paramData = new SqlParameter( "@blob", SqlDbType.Image );
    paramData.Value = imgdata;
    command.Parameters.Add( paramData );
    SqlParameter paramType = new SqlParameter( "@type", SqlDbType.VarChar,50 );
    paramType.Value = imgtype;
    command.Parameters.Add( paramType );
    wztj.debug.TestSQL.TraceErrorSql("INSERT INTO blob(name,type,blob) VALUES ( @imgtitle, @type,@blob )",command.Parameters);
    connection.Open();
    int numRowsAffected = command.ExecuteNonQuery();
    connection.Close();
    }
    listFile.aspx//這個東西主要用來列表,把已經(jīng)有的東西列出來
    <asp:HyperLinkColumn DataNavigateUrlField="id" HeaderText="產(chǎn)品名稱" DataNavigateUrlFormatString="./getFile.aspx?ID={0}" DataTextField="name" DataTextFormatString="{0}" ItemStyle-HorizontalAlign="Center" ItemStyle-Width="160px">
    listFile.aspx.cs
    string connstr="workstation id=OVERMIND;packet size=4096;user id=sa;password=sa;data source=OVERMIND;persist security info=False;initial catalog=wztj";
    SqlConnection connection = new SqlConnection(connstr);
    SqlCommand command = new SqlCommand("select * from blob", connection );
    connection.Open();
    SqlDataAdapter adaptor = new SqlDataAdapter(command);
    DataSet ds = new DataSet();
    adaptor.Fill(ds,"blob");
    connection.Close();
    this.DataGrid1.DataSource=ds.Tables["blob"].DefaultView;
    this.DataGrid1.DataBind();
    getFile.aspx.cs//這個文件比較重要負責把村道數(shù)據(jù)庫里面的文件,按照格式,按照名稱,給傳輸出來
    private void Page_Load(object sender, System.EventArgs e)
    {
    string imgid =this.Request.QueryString.Get("ID");
    //Request.QueryString["imgid"];
    string connstr="workstation id=OVERMIND;packet size=4096;user id=sa;password=sa;data source=OVERMIND;persist security info=False;initial catalog=wztj";
    string sql="SELECT name,blob, type FROM blob WHERE id = " + imgid;
    SqlConnection connection = new SqlConnection(connstr);
    SqlCommand command = new SqlCommand(sql, connection);
    connection.Open();
    SqlDataReader dr = command.ExecuteReader();
    if(dr.Read())
    {
    Response.Clear();
    Response.Buffer= true;
    Response.Charset="GB2312";
    Response.ContentEncoding=System.Text.Encoding.GetEncoding("GB2312");//設(shè)置輸出流為簡體中文
    //Response.ContentType = "application/ms-word";//設(shè)置輸出文件類型為word文件。
    Response.ContentType = dr["type"].ToString();
    Response.BinaryWrite( (byte[]) dr["blob"] );
    string FileName = dr["name"].ToString()。Trim();
    FileName=System.Web.HttpUtility.UrlEncode(FileName,System.Text.Encoding.UTF8 );
    Response.AppendHeader("Content-Disposition", "attachment;filename="+FileName);
    }
    connection.Close();
    }
    這里要說的有兩點,第一,就是把文件的名稱getFile.aspx變成我們想要的名稱。
    Response.AppendHeader("Content-Disposition", "attachment;filename="+FileName);
    第二,就是把指定的名稱變成我們想要的值,是標準的中文,而不是中文的亂碼。
    FileName=System.Web.HttpUtility.UrlEncode(FileName,System.Text.Encoding.UTF8 );