dataGridView 为空

Question

我正在尝试用 table 数据从数据库中填充 DataGridView。方法如下：

adpt = new System.Data.SqlClient.SqlDataAdapter(query, conn);
DataTable dt = new DataTable();
adpt.Fill(dt);

BindingSource bs = new BindingSource();
bs.DataSource = dt;

dataGridView1.ReadOnly = true;
dataGridView1.DataSource = bs;
adpt.Update(dt);

但是我看到的都是空的DataGridView。有人可以告诉我哪里错了或遗漏了什么吗？

Answer 1

填充数据 gridview 的基本函数如下，

void FillData()
            {
                // 1
                // Open connection
                using (SqlCeConnection c = new SqlCeConnection(
                    Properties.Settings.Default.DataConnectionString))
                {
                    c.Open();
                    // 2
                    // Create new DataAdapter
                    using (SqlCeDataAdapter a = new SqlCeDataAdapter(
                        "SELECT * FROM Animals", c))
                    {
                        // 3
                        // Use DataAdapter to fill DataTable
                        DataTable t = new DataTable();
                        a.Fill(t);
                        // 4
                        // Render data onto the screen
                        dataGridView1.DataSource = t;
                    }
                }
            }

dataGridView 为空

dataGridView is empty

c#

database

datagridview