Question

无法将类型为“System.Int64”的对象强制转换为类型“System.String”。

string connString = System.Web.Configuration.WebConfigurationManager.ConnectionStrings["AdminConn2.0"].ToString(); //数据连接,参考“陌香”-http://www.cnblogs.com/_zjl/archive/2011/05/29/2062211.html，AdminConn2.0为web.config里面配置的数据连接字符串的名字。
SqlConnection MyConnection = new SqlConnection(connString);
SqlCommand MyCommand = new SqlCommand("SELECT L_id,L_name,L_email,L_content,L_datetime,L_recontent,L_recontenttime,L_recontentor FROM LeaveMessageDate", MyConnection); //定义一个数据库操作指令
SqlDataReader datadr = null;
try
{
MyConnection.Open();
datadr = MyCommand.ExecuteReader();
if (datadr.Read())
{
this.labId.Text = datadr.GetString(0);
this.txtName.Text = datadr.GetString(1);
this.labTime.Text = datadr.GetString(2);
this.labEmail.Text = datadr.GetString(3);
this.txtContent.Text = datadr.GetString(4);
this.labReContentor.Text = datadr.GetString(5);
this.labReTime.Text = datadr.GetString(6);
this.labReContent.Text = datadr.GetString(7);
}
}
catch (Exception ex)
{
Response.Write(ex.Message);
}
finally
{
MyConnection.Close();
}
请老师修正，我是小白，这种写法对不，若不对，请给个例子，谢谢。

Dispose();
}

Answer 1

将this.labId.Text = datadr.GetString(0);
这句改为this.labId.Text = datadr.GetInt64(0);
如有疑问请追问

追问

使用this.labId.Text = datadr[0].ToString();就好，已经解决。