ScriptManager.RegisterStartupScript(this.Page, this.Page.GetType(), "Alert","alert("第一行 第二行")",true);会报脚本错误
ScriptManager.RegisterStartupScript(this.Page, this.Page.GetType(), "Alert","alert("第一行第二行")",true);这样就正常.
解决方案:
ScriptManager.RegisterStartupScript(this.Page, this.Page.GetType(), "Alert","alert('\n第一行\n第二行')",true);