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标题 ado.net存取word及excel
内容
    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//这个东西主要用来列表,把已经有的东西列出来
    <asp:HyperLinkColumn DataNavigateUrlField="id" HeaderText="产品名称" 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//这个文件比较重要负责把村道数据库里面的文件,按照格式,按照名称,给传输出来
    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");//设置输出流为简体中文
    //Response.ContentType = "application/ms-word";//设置输出文件类型为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();
    }
    这里要说的有两点,第一,就是把文件的名称getFile.aspx变成我们想要的名称。
    Response.AppendHeader("Content-Disposition", "attachment;filename="+FileName);
    第二,就是把指定的名称变成我们想要的值,是标准的中文,而不是中文的乱码。
    FileName=System.Web.HttpUtility.UrlEncode(FileName,System.Text.Encoding.UTF8 );
随便看

 

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更新时间:2025/5/13 19:36:44