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¥4800报名学习您可能感兴趣的话题: ADO.NET
核心提示:用ado.net对word,excel进行存取,以下是操作代码
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 );
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