我试图做一个DataGridView显示来自SQL数据库(GSM.sdf)的数据,并保存按钮时按下DataGridView保存到数据库的更改。数据显示正常,但按下保存按钮时没有任何反应。我已经从这个主题下面顶端回答:将更改从DataGridView保存回SQL数据库?
http://social.msdn.microsoft.com/Forums/en/csharpgeneral/thread/98bc0b4d-a2ea-4b74-81f0-473da624528a
但它不工作了。这里是我的代码:
namespace WindowsFormsApplication5
{
public partial class Zeelot : Form
{
DataTable table = new DataTable();
SqlCeDataAdapter z;
DataSet gSMDataSet = new DataSet();
public Zeelot()
{
InitializeComponent();
}
private void Zeelot_Load(object sender, EventArgs e)
{
string b = @"Data Source =.\SQLEXPRESS;database=GSM;Integrated Security=FALSE;Connection Timeout=30;User Instance=FALSE";
SqlCeConnection conn = new SqlCeConnection(b);
conn.Open();
string cd = "SELECT * FROM PhoneNumbers";
z = new SqlCeDataAdapter(cd, conn);
z.Fill(gSMDataSet, "PhoneNumbers");
table = gSMDataSet.Tables[0];
conn.Close();
dataGridView1.DataSource = table;
}
private void SaveButton_Click(object sender, EventArgs e)
{
SqlCeCommandBuilder local_SqlCommandBuilder = new SqlCeCommandBuilder(z);
local_SqlCommandBuilder.ConflictOption = System.Data.ConflictOption.OverwriteChanges;
z.UpdateCommand = local_SqlCommandBuilder.GetUpdateCommand();
z.Update(((System.Data.DataTable)this.dataGridView1.DataSource));
((System.Data.DataTable)this.dataGridView1.DataSource).AcceptChanges();
}
}
}