急。。输入字符串的格式不正确。。求高手指点！！

Question

堆栈跟踪:
[FormatException: 输入字符串的格式不正确。]
   System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal) +7472119
   System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info) +119
   System.Int32.Parse(String s) +23
   ST_CoursefAdd.btnOK_Click(Object sender, EventArgs e) in d:\样品\学院系统备份\ST_WebCourse\ST_Teacher\ST_CoursefAdd.aspx.cs:159
   System.Web.UI.WebControls.Button.OnClick(EventArgs e) +111
   System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +110
   System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1565小弟初学者，水平有限，也看不懂堆栈跟踪，求大哥大姐们指点，不胜感激！！

Answer 1

 ST_CoursefAdd.btnOK_Click(Object sender, EventArgs e) in d:\样品\学院系统备份\ST_WebCourse\ST_Teacher\ST_CoursefAdd.aspx.cs:159
195行啊 btnOK_Click 方法。 ST_CoursefAdd.aspx页面。。

Answer 2

你应该断点找到出错的那行，然后贴下代码看看，应该是字符串转换成数字出错
将
int temp=int.Parse(this.textBox1.Text);修改如下int temp = 0;
            int.TryParse(this.textBox1.Text,out temp);

Answer 3

st_course.ST_UpdatelCourseInfo(txtName.Text.Trim(), int.Parse(ddlStyle.SelectedValue), int.Parse(ddlSource.SelectedValue), int.Parse(ddlNature.SelectedValue), int.Parse(ddlFundingSource.SelectedValue), int.Parse(ddlLocation.SelectedValue), int.Parse(ddlTeacher.SelectedValue), int.Parse(ddlJob.SelectedValue), txtOutSchoolName.Text, txtOutSchoolJob.Text, int.Parse(ddlMajor.SelectedValue), int.Parse(ddlDept.SelectedValue), txtStudentCode.Text, txtStudentName.Text, txtStudentScore.Text, int.Parse(txtNumber.Text));
这是出错的那行，可我不知道怎么错了

Answer 4

        Regex reg=new Regex(@"^\d+$");
            int ddlSource = 0;
            if(reg.IsMatch(ddlSource.SelectedValue)){
                ddlSource = int.Parse(ddlSource.SelectedValue);
            }
            xxx...
            st_course.ST_UpdatelCourseInfo(ddlSource,xxx...);每个ddl都像我这样判段下就行了

Answer 5

protected void btnOK_Click(object sender, System.EventArgs e)
{
//判断条件，名称不允许未空，名称长度不超过20个字符
if(txtName.Text=="")
Response.Write("<script defer>alert('名称不允许未空');</script>");
else if(txtName.Text.Length>20)
{
Response.Write("<script defer>alert('最多20个字符');</script>");
}
else
{
ST_CourseM st_course = new ST_CourseM();
ST_TeacherM st_teacher = new ST_TeacherM();

Answer 6

if(Request["Action"]=="add")//添加课程
{
                st_course.ST_InsertlCourseInfo(txtName.Text.Trim(), int.Parse(ddlStyle.SelectedValue), int.Parse(ddlSource.SelectedValue), int.Parse(ddlNature.SelectedValue), int.Parse(ddlFundingSource.SelectedValue), int.Parse(ddlLocation.SelectedValue), int.Parse(ddlTeacher.SelectedValue), int.Parse(ddlJob.SelectedValue), txtOutSchoolName.Text, txtOutSchoolJob.Text, int.Parse(ddlMajor.SelectedValue), int.Parse(ddlDept.SelectedValue), txtStudentCode.Text, txtStudentName.Text, txtStudentScore.Text);
                if (int.Parse(ddlDept.SelectedValue) == 1)
                    st_course.ST_InsertxzCourseInfo(txtName.Text.Trim(), int.Parse(ddlStyle.SelectedValue), int.Parse(ddlSource.SelectedValue), int.Parse(ddlNature.SelectedValue), int.Parse(ddlFundingSource.SelectedValue), int.Parse(ddlLocation.SelectedValue), int.Parse(ddlTeacher.SelectedValue), int.Parse(ddlJob.SelectedValue), txtOutSchoolName.Text, txtOutSchoolJob.Text, int.Parse(ddlMajor.SelectedValue), int.Parse(ddlDept.SelectedValue), txtStudentCode.Text, txtStudentName.Text, txtStudentScore.Text);
                else if (int.Parse(ddlDept.SelectedValue) == 2)
                    st_course.ST_InsertjcCourseInfo(txtName.Text.Trim(), int.Parse(ddlStyle.SelectedValue), int.Parse(ddlSource.SelectedValue), int.Parse(ddlNature.SelectedValue), int.Parse(ddlFundingSource.SelectedValue), int.Parse(ddlLocation.SelectedValue), int.Parse(ddlTeacher.SelectedValue), int.Parse(ddlJob.SelectedValue), txtOutSchoolName.Text, txtOutSchoolJob.Text, int.Parse(ddlMajor.SelectedValue), int.Parse(ddlDept.SelectedValue), txtStudentCode.Text, txtStudentName.Text, txtStudentScore.Text);
                else if (int.Parse(ddlDept.SelectedValue) == 3)
                    st_course.ST_InsertlxCourseInfo(txtName.Text.Trim(), int.Parse(ddlStyle.SelectedValue), int.Parse(ddlSource.SelectedValue), int.Parse(ddlNature.SelectedValue), int.Parse(ddlFundingSource.SelectedValue), int.Parse(ddlLocation.SelectedValue), int.Parse(ddlTeacher.SelectedValue), int.Parse(ddlJob.SelectedValue), txtOutSchoolName.Text, txtOutSchoolJob.Text, int.Parse(ddlMajor.SelectedValue), int.Parse(ddlDept.SelectedValue), txtStudentCode.Text, txtStudentName.Text, txtStudentScore.Text);
                else if (int.Parse(ddlDept.SelectedValue) == 4)
                    st_course.ST_InsertyyCourseInfo(txtName.Text.Trim(), int.Parse(ddlStyle.SelectedValue), int.Parse(ddlSource.SelectedValue), int.Parse(ddlNature.SelectedValue), int.Parse(ddlFundingSource.SelectedValue), int.Parse(ddlLocation.SelectedValue), int.Parse(ddlTeacher.SelectedValue), int.Parse(ddlJob.SelectedValue), txtOutSchoolName.Text, txtOutSchoolJob.Text, int.Parse(ddlMajor.SelectedValue), int.Parse(ddlDept.SelectedValue), txtStudentCode.Text, txtStudentName.Text, txtStudentScore.Text);
                else if (int.Parse(ddlDept.SelectedValue) == 5)
                    st_course.ST_InsertfxCourseInfo(txtName.Text.Trim(), int.Parse(ddlStyle.SelectedValue), int.Parse(ddlSource.SelectedValue), int.Parse(ddlNature.SelectedValue), int.Parse(ddlFundingSource.SelectedValue), int.Parse(ddlLocation.SelectedValue), int.Parse(ddlTeacher.SelectedValue), int.Parse(ddlJob.SelectedValue), txtOutSchoolName.Text, txtOutSchoolJob.Text, int.Parse(ddlMajor.SelectedValue), int.Parse(ddlDept.SelectedValue), txtStudentCode.Text, txtStudentName.Text, txtStudentScore.Text);
                else if (int.Parse(ddlDept.SelectedValue) == 6)
                    st_course.ST_InsertxdCourseInfo(txtName.Text.Trim(), int.Parse(ddlStyle.SelectedValue), int.Parse(ddlSource.SelectedValue), int.Parse(ddlNature.SelectedValue), int.Parse(ddlFundingSource.SelectedValue), int.Parse(ddlLocation.SelectedValue), int.Parse(ddlTeacher.SelectedValue), int.Parse(ddlJob.SelectedValue), txtOutSchoolName.Text, txtOutSchoolJob.Text, int.Parse(ddlMajor.SelectedValue), int.Parse(ddlDept.SelectedValue), txtStudentCode.Text, txtStudentName.Text, txtStudentScore.Text);
                else if (int.Parse(ddlDept.SelectedValue) == 7)
                    st_course.ST_InsertdlCourseInfo(txtName.Text.Trim(), int.Parse(ddlStyle.SelectedValue), int.Parse(ddlSource.SelectedValue), int.Parse(ddlNature.SelectedValue), int.Parse(ddlFundingSource.SelectedValue), int.Parse(ddlLocation.SelectedValue), int.Parse(ddlTeacher.SelectedValue), int.Parse(ddlJob.SelectedValue), txtOutSchoolName.Text, txtOutSchoolJob.Text, int.Parse(ddlMajor.SelectedValue), int.Parse(ddlDept.SelectedValue), txtStudentCode.Text, txtStudentName.Text, txtStudentScore.Text);
                else if (int.Parse(ddlDept.SelectedValue) == 8)
                    st_course.ST_InsertjsCourseInfo(txtName.Text.Trim(), int.Parse(ddlStyle.SelectedValue), int.Parse(ddlSource.SelectedValue), int.Parse(ddlNature.SelectedValue), int.Parse(ddlFundingSource.SelectedValue), int.Parse(ddlLocation.SelectedValue), int.Parse(ddlTeacher.SelectedValue), int.Parse(ddlJob.SelectedValue), txtOutSchoolName.Text, txtOutSchoolJob.Text, int.Parse(ddlMajor.SelectedValue), int.Parse(ddlDept.SelectedValue), txtStudentCode.Text, txtStudentName.Text, txtStudentScore.Text);
                else if (int.Parse(ddlDept.SelectedValue) == 9)
                    st_course.ST_InserthkCourseInfo(txtName.Text.Trim(), int.Parse(ddlStyle.SelectedValue), int.Parse(ddlSource.SelectedValue), int.Parse(ddlNature.SelectedValue), int.Parse(ddlFundingSource.SelectedValue), int.Parse(ddlLocation.SelectedValue), int.Parse(ddlTeacher.SelectedValue), int.Parse(ddlJob.SelectedValue), txtOutSchoolName.Text, txtOutSchoolJob.Text, int.Parse(ddlMajor.SelectedValue), int.Parse(ddlDept.SelectedValue), txtStudentCode.Text, txtStudentName.Text, txtStudentScore.Text);
                else if (int.Parse(ddlDept.SelectedValue) == 10)
                    st_course.ST_InsertfhCourseInfo(txtName.Text.Trim(), int.Parse(ddlStyle.SelectedValue), int.Parse(ddlSource.SelectedValue), int.Parse(ddlNature.SelectedValue), int.Parse(ddlFundingSource.SelectedValue), int.Parse(ddlLocation.SelectedValue), int.Parse(ddlTeacher.SelectedValue), int.Parse(ddlJob.SelectedValue), txtOutSchoolName.Text, txtOutSchoolJob.Text, int.Parse(ddlMajor.SelectedValue), int.Parse(ddlDept.SelectedValue), txtStudentCode.Text, txtStudentName.Text, txtStudentScore.Text);
                else
                    st_course.ST_InsertwdCourseInfo(txtName.Text.Trim(), int.Parse(ddlStyle.SelectedValue), int.Parse(ddlSource.SelectedValue), int.Parse(ddlNature.SelectedValue), int.Parse(ddlFundingSource.SelectedValue), int.Parse(ddlLocation.SelectedValue), int.Parse(ddlTeacher.SelectedValue), int.Parse(ddlJob.SelectedValue), txtOutSchoolName.Text, txtOutSchoolJob.Text, int.Parse(ddlMajor.SelectedValue), int.Parse(ddlDept.SelectedValue), txtStudentCode.Text, txtStudentName.Text, txtStudentScore.Text); 
}

Answer 7

else//更新课程
{
                st_course.ST_UpdatelCourseInfo(txtName.Text.Trim(), int.Parse(ddlStyle.SelectedValue), int.Parse(ddlSource.SelectedValue), int.Parse(ddlNature.SelectedValue), int.Parse(ddlFundingSource.SelectedValue), int.Parse(ddlLocation.SelectedValue), int.Parse(ddlTeacher.SelectedValue), int.Parse(ddlJob.SelectedValue), txtOutSchoolName.Text, txtOutSchoolJob.Text, int.Parse(ddlMajor.SelectedValue), int.Parse(ddlDept.SelectedValue), txtStudentCode.Text, txtStudentName.Text, txtStudentScore.Text, int.Parse(txtNumber.Text));
                st_course.ST_UpdatexzCourseInfo(txtName.Text.Trim(), int.Parse(ddlStyle.SelectedValue), int.Parse(ddlSource.SelectedValue), int.Parse(ddlNature.SelectedValue), int.Parse(ddlFundingSource.SelectedValue), int.Parse(ddlLocation.SelectedValue), int.Parse(ddlTeacher.SelectedValue), int.Parse(ddlJob.SelectedValue), txtOutSchoolName.Text, txtOutSchoolJob.Text, int.Parse(ddlMajor.SelectedValue), int.Parse(ddlDept.SelectedValue), txtStudentCode.Text, txtStudentName.Text, txtStudentScore.Text, int.Parse(txtNumber.Text));
                st_course.ST_UpdatejcCourseInfo(txtName.Text.Trim(), int.Parse(ddlStyle.SelectedValue), int.Parse(ddlSource.SelectedValue), int.Parse(ddlNature.SelectedValue), int.Parse(ddlFundingSource.SelectedValue), int.Parse(ddlLocation.SelectedValue), int.Parse(ddlTeacher.SelectedValue), int.Parse(ddlJob.SelectedValue), txtOutSchoolName.Text, txtOutSchoolJob.Text, int.Parse(ddlMajor.SelectedValue), int.Parse(ddlDept.SelectedValue), txtStudentCode.Text, txtStudentName.Text, txtStudentScore.Text, int.Parse(txtNumber.Text));
                st_course.ST_UpdatelxCourseInfo(txtName.Text.Trim(), int.Parse(ddlStyle.SelectedValue), int.Parse(ddlSource.SelectedValue), int.Parse(ddlNature.SelectedValue), int.Parse(ddlFundingSource.SelectedValue), int.Parse(ddlLocation.SelectedValue), int.Parse(ddlTeacher.SelectedValue), int.Parse(ddlJob.SelectedValue), txtOutSchoolName.Text, txtOutSchoolJob.Text, int.Parse(ddlMajor.SelectedValue), int.Parse(ddlDept.SelectedValue), txtStudentCode.Text, txtStudentName.Text, txtStudentScore.Text, int.Parse(txtNumber.Text));
                st_course.ST_UpdateyyCourseInfo(txtName.Text.Trim(), int.Parse(ddlStyle.SelectedValue), int.Parse(ddlSource.SelectedValue), int.Parse(ddlNature.SelectedValue), int.Parse(ddlFundingSource.SelectedValue), int.Parse(ddlLocation.SelectedValue), int.Parse(ddlTeacher.SelectedValue), int.Parse(ddlJob.SelectedValue), txtOutSchoolName.Text, txtOutSchoolJob.Text, int.Parse(ddlMajor.SelectedValue), int.Parse(ddlDept.SelectedValue), txtStudentCode.Text, txtStudentName.Text, txtStudentScore.Text, int.Parse(txtNumber.Text));
                st_course.ST_UpdatefxCourseInfo(txtName.Text.Trim(), int.Parse(ddlStyle.SelectedValue), int.Parse(ddlSource.SelectedValue), int.Parse(ddlNature.SelectedValue), int.Parse(ddlFundingSource.SelectedValue), int.Parse(ddlLocation.SelectedValue), int.Parse(ddlTeacher.SelectedValue), int.Parse(ddlJob.SelectedValue), txtOutSchoolName.Text, txtOutSchoolJob.Text, int.Parse(ddlMajor.SelectedValue), int.Parse(ddlDept.SelectedValue), txtStudentCode.Text, txtStudentName.Text, txtStudentScore.Text, int.Parse(txtNumber.Text));
                st_course.ST_UpdatexdCourseInfo(txtName.Text.Trim(), int.Parse(ddlStyle.SelectedValue), int.Parse(ddlSource.SelectedValue), int.Parse(ddlNature.SelectedValue), int.Parse(ddlFundingSource.SelectedValue), int.Parse(ddlLocation.SelectedValue), int.Parse(ddlTeacher.SelectedValue), int.Parse(ddlJob.SelectedValue), txtOutSchoolName.Text, txtOutSchoolJob.Text, int.Parse(ddlMajor.SelectedValue), int.Parse(ddlDept.SelectedValue), txtStudentCode.Text, txtStudentName.Text, txtStudentScore.Text, int.Parse(txtNumber.Text));
                st_course.ST_UpdatedlCourseInfo(txtName.Text.Trim(), int.Parse(ddlStyle.SelectedValue), int.Parse(ddlSource.SelectedValue), int.Parse(ddlNature.SelectedValue), int.Parse(ddlFundingSource.SelectedValue), int.Parse(ddlLocation.SelectedValue), int.Parse(ddlTeacher.SelectedValue), int.Parse(ddlJob.SelectedValue), txtOutSchoolName.Text, txtOutSchoolJob.Text, int.Parse(ddlMajor.SelectedValue), int.Parse(ddlDept.SelectedValue), txtStudentCode.Text, txtStudentName.Text, txtStudentScore.Text, int.Parse(txtNumber.Text));
                st_course.ST_UpdatejsCourseInfo(txtName.Text.Trim(), int.Parse(ddlStyle.SelectedValue), int.Parse(ddlSource.SelectedValue), int.Parse(ddlNature.SelectedValue), int.Parse(ddlFundingSource.SelectedValue), int.Parse(ddlLocation.SelectedValue), int.Parse(ddlTeacher.SelectedValue), int.Parse(ddlJob.SelectedValue), txtOutSchoolName.Text, txtOutSchoolJob.Text, int.Parse(ddlMajor.SelectedValue), int.Parse(ddlDept.SelectedValue), txtStudentCode.Text, txtStudentName.Text, txtStudentScore.Text, int.Parse(txtNumber.Text));
                st_course.ST_UpdatehkCourseInfo(txtName.Text.Trim(), int.Parse(ddlStyle.SelectedValue), int.Parse(ddlSource.SelectedValue), int.Parse(ddlNature.SelectedValue), int.Parse(ddlFundingSource.SelectedValue), int.Parse(ddlLocation.SelectedValue), int.Parse(ddlTeacher.SelectedValue), int.Parse(ddlJob.SelectedValue), txtOutSchoolName.Text, txtOutSchoolJob.Text, int.Parse(ddlMajor.SelectedValue), int.Parse(ddlDept.SelectedValue), txtStudentCode.Text, txtStudentName.Text, txtStudentScore.Text, int.Parse(txtNumber.Text));
                st_course.ST_UpdatefhCourseInfo(txtName.Text.Trim(), int.Parse(ddlStyle.SelectedValue), int.Parse(ddlSource.SelectedValue), int.Parse(ddlNature.SelectedValue), int.Parse(ddlFundingSource.SelectedValue), int.Parse(ddlLocation.SelectedValue), int.Parse(ddlTeacher.SelectedValue), int.Parse(ddlJob.SelectedValue), txtOutSchoolName.Text, txtOutSchoolJob.Text, int.Parse(ddlMajor.SelectedValue), int.Parse(ddlDept.SelectedValue), txtStudentCode.Text, txtStudentName.Text, txtStudentScore.Text, int.Parse(txtNumber.Text));
                st_course.ST_UpdatewdCourseInfo(txtName.Text.Trim(), int.Parse(ddlStyle.SelectedValue), int.Parse(ddlSource.SelectedValue), int.Parse(ddlNature.SelectedValue), int.Parse(ddlFundingSource.SelectedValue), int.Parse(ddlLocation.SelectedValue), int.Parse(ddlTeacher.SelectedValue), int.Parse(ddlJob.SelectedValue), txtOutSchoolName.Text, txtOutSchoolJob.Text, int.Parse(ddlMajor.SelectedValue), int.Parse(ddlDept.SelectedValue), txtStudentCode.Text, txtStudentName.Text, txtStudentScore.Text, int.Parse(txtNumber.Text));
} string str = "<script language=javascript>window.dialogArguments.document.location.href='ST_Course.aspx';window.close();</script>"; 
Response.Write(str);
}
}

Answer 8

大概是 dropdownlist 绑定的value里有非数字 转换的时候出错。设个断点监听下

Answer 9

苦恼啊，解决不了。。确定所有的ddl都取到值了，是数字，但就是报错。。诶。。

Answer 10

主要是您老人家这代码跟min版的JQuery似的，实在提不起看代码的兴趣。

Answer 11

主要是您老人家这代码跟min版的JQuery似的，实在提不起看代码的兴趣。

Answer 12

  
在你的页面同一目录新建一个类  把这代码扔进去
public static class Extends
    {        public static int ToInt(this object o)
        {
            int reval = 0;
            if (o != null && int.TryParse(o.ToString(), out reval))
            {
                return reval;
            }
            return 0;
        }
    }然后改你的代码如下
 int.Parse(ddlStyle.SelectedValue),
 int.Parse(ddlSource.SelectedValue),
 int.Parse(ddlNature.SelectedValue), 
 int.Parse(ddlFundingSource.SelectedValue), 
 把上面代码换成
ddlStyle.SelectedValue.ToInt()写法
ddlSource.SelectedValue.ToInt()

Answer 13

在你的页面同一目录新建一个类把下面代码直接复制进去
public static class Extends
{    public static int ToInt(this object o)
    {
        int reval = 0;
        if (o != null && int.TryParse(o.ToString(), out reval))
        {
            return reval;
        }
        return 0;
    }
}
然后
int.Parse(ddlStyle.SelectedValue)
全部换成
ddlStyle.SelectedValue.ToInt()