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我试图为使用ms访问数据库的网站创建登录表单。我正在使用visual studio 2010 c#并访问2013.出于某种原因,我无法登录。我真的很陌生,因此我非常感谢所有帮助。无法登录网站
数据层:
public class DataConnector
{
protected OleDbDataAdapter DataAdapter1 = new OleDbDataAdapter();
public string ErrorMessage = "";
public DataConnector(string ConnectionString)
{
OleDbConnection Connection1 = new OleDbConnection(ConnectionString);
this.DataAdapter1.SelectCommand = new OleDbCommand("", Connection1);
this.DataAdapter1.InsertCommand = new OleDbCommand("", Connection1);
}
public DataTable DataSelect(string query)
{
DataTable dt = new DataTable();
try
{
DataAdapter1.SelectCommand.CommandText = query;
DataAdapter1.SelectCommand.Connection.Open();
DataAdapter1.Fill(dt);
DataAdapter1.SelectCommand.Connection.Close();
ErrorMessage = "";
}
catch(Exception err)
{
ErrorMessage = err.Message;
DataAdapter1.SelectCommand.Connection.Close();
}
return dt;
}
public int DataInsert(string query)
{
int Result = 0;
try
{
DataAdapter1.InsertCommand.CommandText = query;
DataAdapter1.InsertCommand.Connection.Open();
Result = DataAdapter1.InsertCommand.ExecuteNonQuery();
DataAdapter1.InsertCommand.Connection.Close();
ErrorMessage = "";
return Result;
}
catch (Exception err)
{
ErrorMessage = err.Message;
DataAdapter1.InsertCommand.Connection.Close();
return 0;
}
}
public int DataUpdate(string query)
{
return DataInsert(query);
}
public int DataDelete(string query)
{
return DataInsert(query);
}
}
Default.aspx.cs:
public partial class Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnLogin_Click(object sender, EventArgs e)
{
DataLayer.DataConnector dat = new DataLayer.DataConnector("Provider=Microsoft.ACE.OLEDB.12.O;"+"Data Source='"+Server.MapPath("site_database.accdb")+"'; Persist Security Info=False;");
DataTable dt = dat.DataSelect("select UserID from tbl_login where Username = '" + txtUsername.Text + "' and Password = '"+ txtPassword.Text +"' ");
if (dt.Rows.Count > 0)
{
Response.Redirect("members_area.aspx");
}
else
lblerror.Text = "Login failed";
}
}
我没有得到任何错误,我只是不明白。当我尝试登录时,它只停留在default.aspx页面上。
如果您对我们有任何的附加信息,如异常,这是真的很难找出是什么出错了。如果您还没有尝试过,请尝试在您的btnLogin_Click事件中放置一个断点。这可能有助于你理解失败。 – avb