我设置了了一按钮(Btn_Save),但是点击时报错了,错误信息如下:[NullReferenceException: 未将对象引用设置到对象的实例。]
Test.testbtn.Btn_Save_Click(Object sender, EventArgs e)
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +108
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +57
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +18
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
System.Web.UI.Page.ProcessRequestMain() +1277请问怎么解决啊?
Test.testbtn.Btn_Save_Click(Object sender, EventArgs e)
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +108
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +57
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +18
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
System.Web.UI.Page.ProcessRequestMain() +1277请问怎么解决啊?
是vs.net吗?把和你的按钮相关的代码都贴出来!
有下面这样的语句吗
protected System.Web.UI.WebControls.Button btnLogout;
protected System.Web.UI.WebControls.Button Btn_Save;private void InitializeComponent()
{
this.ddlData.SelectedIndexChanged += new System.EventHandler(this.ddlData_SelectedIndexChanged);
this.Btn_Save.Click += new System.EventHandler(this.Btn_Save_Click);
this.Load += new System.EventHandler(this.Page_Load); }
private void Btn_Save_Click(object sender, System.EventArgs e)
{
try
{
... ...
}
catch(Exception ex)
{
Response.Write(ex.ToString());
}
}
我认为不是Btn_Save_Click里面的代码错了,是点击按钮后,在响应这个事件时出的错:Test.testbtn.Btn_Save_Click(Object sender, EventArgs e)