如何达到点击浏览选择图片后，立马显示预览图片？
string bookName = TextBox2.Text.Trim();
string bookLeibie = TextBox3.Text.Trim();
string picture = FileUpload1.FileName;
string lastName = picture.Substring(picture.LastIndexOf(".") + 1);
string[] name={"bmp","jpg","gif"};
SqlConnection SqlCon = new SqlConnection(ConfigurationManager.ConnectionStrings["ConStr"].ConnectionString);
SqlCon.Open();
string SavaPath = Server.MapPath("image/")+picture;
FileUpload1.PostedFile.SaveAs(SavaPath);
string sqlStr = "Insert into T_Book_Picture(ID,图书类别,图书名,图片) values(newid(),'" + bookLeibie + "','" + bookName + "','"+ picture + "')";
SqlCommand SqlCom = new SqlCommand(sqlStr, SqlCon);
SqlCom.ExecuteNonQuery();
SqlCon.Close();
Image1.Visible = true;
Image1.ImageUrl = SavaPath;
我是先把图片设为不可见，想点击浏览后，立即可以显示图片。
[解决办法]
你要兼容行么？
<html> <head> <title>get file input full path</title> <script language='javascript'> function getFullPath(obj) { if(obj) { //ie if (window.navigator.userAgent.indexOf("MSIE")>=1) { obj.select(); return document.selection.createRange().text; } //firefox else if(window.navigator.userAgent.indexOf("Firefox")>=1) { if(obj.files) { return obj.files.item(0).getAsDataURL(); } return obj.value; } return obj.value; } } </script> </head> <body> <input type="file" onchange="document.getElementById('img').src=getFullPath(this);" /> <img id="img" height="174" width="234"/> </body> </html>