Question

我正在尝试编写一个项目来显示MMABooks数据库中2个表的一些数据。这些代码在C＃中工作，但它们在ASP.Net中不起作用。实际上，它什么都不做，我没有任何错误！为什么？有什么问题？

string connectionString = "Data Source=localhost\\SqlExpress;" +
                "Initial Catalog=MMABooks;Integrated Security=True";

SqlConnection connection = new SqlConnection(connectionString);
string selectStatement = "SELECT Customers.Name, Customers.City, States.StateName " +
                "FROM Customers " +
                "INNER JOIN States " +
                "ON Customers.State = States.StateCode " +
                "WHERE Name LIKE @Name";

 SqlCommand SelectCommand = new SqlCommand(selectStatement, connection);
 SelectCommand.Parameters.AddWithValue("@Name", TextBox1.Text.Trim() + "%");

 connection.Open();
  var dataAdapter = new SqlDataAdapter(SelectCommand);
  DataTable dt = new DataTable();
  dataAdapter.Fill(dt);
  GridView1.DataSource = dt;

Answer 1

您需要ASP.NET中的GridView1.DataBind() 将数据源绑定到最后一行之后的GridView 。

GridView1.DataSource = dt;
GridView1.DataBind();

Answer 2

在<ul> <li><img alt="" class="icon-grid" src="https://cdn-accept-www.enfocus.com/sites/combell-accept-www.enfocus.com/files/media/product-pages/pitstop-pro/low-resolution.png"></li> <li><img alt="" class="icon-grid" src="https://cdn-accept-www.enfocus.com/sites/combell-accept-www.enfocus.com/files/media/product-pages/pitstop-pro/low-resolution.png"></li> <li><img alt="" class="icon-grid" src="https://cdn-accept-www.enfocus.com/sites/combell-accept-www.enfocus.com/files/media/product-pages/pitstop-pro/low-resolution.png"></li> <li><img alt="" class="icon-grid" src="https://cdn-accept-www.enfocus.com/sites/combell-accept-www.enfocus.com/files/media/product-pages/pitstop-pro/low-resolution.png"></li> <li><img alt="" class="icon-grid" src="https://cdn-accept-www.enfocus.com/sites/combell-accept-www.enfocus.com/files/media/product-pages/pitstop-pro/low-resolution.png"></li> <li><img alt="" class="icon-grid" src="https://cdn-accept-www.enfocus.com/sites/combell-accept-www.enfocus.com/files/media/product-pages/pitstop-pro/low-resolution.png"></li> <li><img alt="" class="icon-grid" src="https://cdn-accept-www.enfocus.com/sites/combell-accept-www.enfocus.com/files/media/product-pages/pitstop-pro/low-resolution.png"></li> <li><img alt="" class="icon-grid" src="https://cdn-accept-www.enfocus.com/sites/combell-accept-www.enfocus.com/files/media/product-pages/pitstop-pro/low-resolution.png"></li> </ul>

之后，你遗失了GridView1.DataSource = dt;

GridView1.DataSource = dt;

为什么我的ASP.NET项目什么都不做？

2 个答案: