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protected void Page_Load(object sender, EventArgs e)
{
MyRandom mr = new MyRandom();
string valStr = mr.RandNum(4);
Session["validateSn"] = valStr;//这里有问题??!!
cn.com.webxml.www.ValidateCodeWebService wr = new cn.com.webxml.www.ValidateCodeWebService();
byte[] bytesBmp = wr.enValidateByte(valStr);
Response.BinaryWrite(bytesBmp);
Response.End();
}
<img id="img1" runat="server" src="~/ValidatePic.aspx" class="ValPicStyle" alt="验证图片"/>
if (validateStr == Session["validateSn"].ToString())