上传图片
aspx前端:<div><asp:Image ID="Image1" runat="server" />//这个控件在浏览器中不显示 <span style="color:#eeff00">图片预览</span> <asp:TextBox ID="txtCover" runat="server" ReadOnly=“true”></asp:TextBox>//显示存储图片的路径 <span style="color:#4cff00" >图片上传的路径</span></br> <asp:FileUpload ID="imgupload" runat="server" /> <asp:Button ID="btnUpload" runat="server" Text="上传" OnClick="btnUpload_Click" /> OnClick是鼠标点击跳转的事件 btnUpload_Click 是执行protected void btnUpload_Click(object sender, EventArgs e)这个事件</div>aspx.cs后台protected void btnUpload_click(object sender,EventArgs e){if(imgupload.PostedFile.FileName!="")
{ string imgPath=imgupload.PostedFile.FileName; string extPath=imgPath.Substring(imgPath.LastIndexOf(".")+1) if(extPath.ToLower()!="jpg"&&extPath.ToLower()!="png"&&extPath.ToLower()!="bmp") { Page.ClientScript.RegisterClientScriptBlock(GetType(), "", "<script language=javascript>alert('选择文件类型JPG,bmp,PNG')</script>"); } else { string sPath=Server.MapPath("/UploadFiles/upload"); imgupload.PostedFile.SaveAs(sPath+"\\"+imgPath.Substring(imgPath.LastIndexOf("\\")+1); sPath = sPath.Substring(sPath.LastIndexOf("\\") + 1); //sPath = 文件夹里的upload; //在这里Spath被重置为\\upload this.txtCover.Text = sPath + "/" + imgPath.Substring(imgPath.LastIndexOf("\\") + 1);//文件夹里的upload+xx.jpg; // 这里txtCover的值为upload文件名.扩展名 Page.ClientScript.RegisterClientScriptBlock(GetType(), "", "<script language=javascript>alert('上传成功')</script>"); Image1.ImageUrl = "/UploadFiles/" + this.txtCover.Text;//?upload/$@B0)U`]TDA@MKRDW15BJQR.jpg } } else { Page.ClientScript.RegisterClientScriptBlock(GetType(), "", "<script language=javascript>alert('请选择图片')</script>"); }