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asp.net 图片的读写入库实现代码

2020-04-24 22:13:29
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写图片c:/1.jpg到表cinfo中
代码如下:
private static void AddCinfo()
{
string strSql = "insert into cinfo (srvtitle,csttitle,introduction,logo) values

(@srvtitle,@csttitle,@introduction,@logo)";
SqlParameter[] parms =
{
new SqlParameter("@srvtitle",SqlDbType.VarChar,30),
new SqlParameter("@csttitle",SqlDbType.VarChar,30),
new SqlParameter("@introduction",SqlDbType.NVarChar,500),
new SqlParameter("@logo",SqlDbType.Image)
};
parms[0].Value = "旅业互动";
parms[1].Value = "lyhd";
parms[2].Value = "简介";

string filePath = @"c:/1.jpg";
FileStream fs = File.OpenRead(filePath);

byte[] content = new byte[fs.Length];

fs.Read(content, 0, content.Length);

fs.Close();

parms[3].Value = content;

DBHelper.ExecuteNonQuery(CommandType.Text, strSql, parms);
}

读取图片的页面 test.aspx
代码如下:
protected void Page_Load(object sender, EventArgs e)
{
string strSql = "select * from cinfo where id=1";
SqlDataReader reader=DBHelper.ExecuteReader(CommandType.Text, strSql, null);
if(reader.Read())
{
byte[] c=(byte[])reader["logo"];
Response.BinaryWrite(c);
}
}

用来显示图片的页面 test2.aspx
代码如下:
<img src="test.aspx" />
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