想法是添加窗口,用户可以在其中找到数据库中的任何学生。但是我的错误 列名称错误。 我的方法'代码
string connStr = @"Data Source=.\SQLEXPRESS;
AttachDBFileName=C:\Users\Чак\Desktop\ботанизм\ООП\coursework.start\CourseWorkFinal\CourseWorkFinal\University11.mdf;
Integrated Security=True";
SqlConnection conn = new SqlConnection(connStr);
conn.Open();
//idstudent={0} AND Name={1} AND Surname={2} AND Middlename={3} AND House={4} AND Street={5} AND Telephone={6}
string BETA = string.Format("SELECT * FROM Students WHERE Name={0}", "Bob");//textbox1.Text
SqlDataAdapter a = new SqlDataAdapter(BETA, conn);
DataTable x = new DataTable();
a.Fill(x);//<-there is an exception
this.dataGrid1.DataContext = x;
conn.Close();
XAML代码
<DataGrid AutoGenerateColumns="False" Height="227" HorizontalAlignment="Left" Margin="198,12,0,0" Name="dataGrid1" VerticalAlignment="Top" Width="443" ItemsSource="{Binding}"/>
我在数据库中有这样的名字。为什么我有这样的例外?
答案 0 :(得分:2)
问题在于这行代码:
string BETA = string.Format("SELECT * FROM Students WHERE Name={0}", "Bob");//textbox1.Text
这需要更改为:
string BETA = string.Format("SELECT * FROM Students WHERE Name='{0}'", "Bob");//textbox1.Text