C#混淆中的数据绑定. [英] Databinding in C# Confusion.

问题描述

我正在努力理解数据绑定的概念，但这可能是因为我感到困惑.我无法弄清楚数据绑定是否已经超过我已经完成的工作.以下是连接到SQL数据库的代码片段.这是数据绑定吗?任何人都可以帮忙解释一下，然后再花几天的时间进行阅读.

谢谢

Hi,

I''m struggling to understand the concept of databinding, but it may be because i''m confusing myself. I cant work out if databinding is any more than what I''ve already done. Below is a snippet of my code connecting to my SQL database. Is this databinding? Can anyone help please explain before I spend several more days reading up on it.

Thanks

try
           {
               string UserIDSort = tbxUserID.Text.Remove(2, 6);
               int UserIDInt = Convert.ToInt32(UserIDSort);
               if (UserIDInt == 10 || UserIDInt == 15 || UserIDInt == 20)
               {
               SqlConnection connection = new SqlConnection("Data Source=OMEGA; Initial Catalog = Military; Integrated Security = True; Pooling = False");
               connection.Open();
               string s2 = "SELECT UserID, Password FROM [dbo].[Logon];";
               SqlDataAdapter adapter = new SqlDataAdapter(s2, connection);
               SqlCommandBuilder cmdBuilder = new SqlCommandBuilder(adapter);
               DataSet dataset = new DataSet();
               adapter.Fill(dataset);
               DataRow r = dataset.Tables[0].NewRow();
               string un = (tbxUserID.Text);
               string up = (tbxPassword.Text);
               r["UserID"] = un;
               r["Password"] = up;

               dataset.Tables[0].Rows.Add(r);
               adapter.Update(dataset);
               dataset.AcceptChanges();
               }
               else
               {
                   MessageBox.Show("Username Must Start with 10, 15 or 20 and must be 8 characters long");
               }
           }

推荐答案

数据绑定是在应用程序UI和业务逻辑之间建立连接的过程."

http://msdn.microsoft.com/en-us/library/ms752347 (v = VS.90).aspx [

"Data binding is the process that establishes a connection between the application UI and business logic."

http://msdn.microsoft.com/en-us/library/ms752347(v=VS.90).aspx[^]

In your snippet you have neither business logic nor a UI, ergo, this is not databinding.

This would be an example of databinding

DropDownList ddl = new DropDownList();
ddl.DataSource = myDatasource;
ddl.DataBind();

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