如何从错误中恢复？

问题描述

限时删除！！

使用LinQ将数据从表单插入数据库时​​出现此错误



当我输入类的对象时（例如：Employee empObj = new Employee（））它显示错误。

使用（DataClass1DataContext DcContext = new DataClass1DataContext（））
 {
 ArticleMdl articleObj = new ArticleMdl（）; 
 articleObj.Title = TextBox1.Text; 
 articleObj.Summary = TextBox2.Text; 
 articleObj.Tags = TextBox3.Text; 
 articleObj.Image = TextBox4.Text; 
 articleObj.Category = Convert.ToInt32（RadioButtonList1.SelectedValue）; 
 articleObj.Subcategory = Convert.ToInt32（RadioButtonList2.SelectedValue）; 
 
 DcContext.tblArticles.InsertOnSubmit（articleObj）; 
 DcContext.SubmitChanges（）; 
 Label1.Text =你的文章已保存。; 
} 

请回复如何恢复它。



我尝试了什么：



尝试插入直接值到属性。出现相同的错误。

解决方案

I'm getting this error while inserting data from my form to database using LinQ

When I enter the object of the class(e.g: Employee empObj = new Employee()) It shows the error.

using (DataClass1DataContext DcContext = new DataClass1DataContext())
                {
                    ArticleMdl articleObj = new ArticleMdl();
                    articleObj.Title = TextBox1.Text;
                    articleObj.Summary = TextBox2.Text;
                    articleObj.Tags = TextBox3.Text;
                    articleObj.Image = TextBox4.Text;
                    articleObj.Category = Convert.ToInt32(RadioButtonList1.SelectedValue);
                    articleObj.Subcategory = Convert.ToInt32(RadioButtonList2.SelectedValue);

                    DcContext.tblArticles.InsertOnSubmit(articleObj);
                    DcContext.SubmitChanges();
                    Label1.Text = "Your article is saved.";
                }

Please do reply how to recover it.

What I have tried:

Tried to insert on putting of direct values to the properties. The same error arose.

解决方案

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