【发布时间】：2011-03-01 19:52:15
【问题描述】：
我是 asp.net 的新手。我写了一页asp.net，但是运行时出现如下错误。
public partial class Issueofbook: System.Web.UI.Page
{
public Int64 Sid;
protected void Page_Load(object sender, EventArgs e)
{
string Id;
Id = Request.QueryString.Get(0);
if (!(IsPostBack == true))
{
if (Request.QueryString.Get(1) == "G")
{
Sid = Convert.ToInt64(Id);
if (PopulatedRecord (Sid ) == false)
{
}
}
}
}
private Boolean PopulatedRecord(Int64 Id)
{
DataSet DS;
DS = new DataSet();
SqlCommand cmd = new SqlCommand();
SqlDataAdapter da = new SqlDataAdapter();
SqlConnection Cnn = new SqlConnection();
string connectionstring;
connectionstring = @"Datasource=DEVI\SQLEXPRESS;Intial catalog=librarymanagement;Integrated Security=SSPI";
Cnn.ConnectionString = connectionstring;
if (Cnn.State != ConnectionState.Open)
Cnn.Open();
cmd.Connection = Cnn;
cmd.CommandType = CommandType.StoredProcedure;
cmd.CommandText = "usbinsertdatainto";
cmd.Parameters.Clear();
cmd.Parameters.AddWithValue("@bookno", "no");
Adp.SelectCommand = Cmd;
try
{
Adp.Fill(Ds);
}
catch (Exception ex)
{
throw new ApplicationException(
"!!! An Error Occured While Update Record In Dtl_SecurityCapital_Upload." + ex.Message);
lblError.Visible = true;
lblError.Text = "!!! An Error Occured While " + ex.Message.ToString();
return false;
}
if (DS.Tables[0].Rows.Count > 0)
{
txtno.Text = DS.Tables[0].Rows[0]["bookno"].ToString();
txtstuno.Text = DS.Tables[0].Rows[0]["studentno"].ToString();
RadioButton1.Text = DS.Tables[0].Rows[0]["currentnoofcopiesavaillable"].ToString();
RadioButton2.Text = DS.Tables[0].Rows[0]["currentnoofcopiesavaillable"].ToString();
txtdate.Text = DS.Tables[0].Rows[0]["IssueDate"].ToString();
txtddate.Text = DS.Tables[0].Rows[0]["Duedate"].ToString();
}
cmd.Dispose();
Cnn.Close();
Cnn.Dispose();
return true;
}
protected void Button2_Click(object sender, EventArgs e)
{
SqlConnection Cnn = new SqlConnection();
string constr = null;
SqlCommand cmd = new SqlCommand();
constr = @"Data Source=DEVI\SQLEXPRESS; Initial Catalog =librarymanagement; Integrated Security=SSPI";
Cnn.ConnectionString =constr;
try
{
if (Cnn.State != ConnectionState.Open)
Cnn.Open();
}
catch (Exception ex)
{
string str1 = null;
str1 = ex.ToString();
}
cmd.Connection = Cnn;
cmd.CommandType = CommandType.StoredProcedure;
cmd.CommandText = "uspInsertbookDatainto";
cmd.Parameters.Clear();
cmd.Parameters.AddWithValue("@bookno", txtno.Text);
cmd.Parameters.AddWithValue("@studentno", txtstuno.Text);
cmd.Parameters.AddWithValue("@Issuedate", txtdate.Text);
cmd.Parameters.AddWithValue("@Duedate", txtddate.Text);
if (RadioButton1.Checked==true)
{
cmd.Parameters.AddWithValue("@currentnoofcopiesavaillable", RadioButton1.Text);
}
if (RadioButton2.Checked == true)
{
cmd.Parameters.AddWithValue("@currentnoofcopiesavaillable", RadioButton2.Text);
}
try
{
cmd.ExecuteNonquery();
}
catch (Exception ex)
{
throw new ApplicationException("!!! An error an occured while Insert Record Dtl_SecurityCapital_Upload." + ex.Message);
lblerror.Visible = true;
lblerror.Text = "!!! An Error occured while ." + ex.Message.ToString();
}
finally
{
cmd.Dispose();
}
Cnn.Close();
lblError.Text = "New Issue of record suceessfully!!";
txtno.Text = "";
txtstuno.Text = "";
txtdate.Text = "";
txtddate.Text = "";
}
}
说明：
编译服务此请求所需的资源时出错。请查看以下具体错误详情并适当修改您的源代码。
编译器错误信息：
CS0115: 'ASP.issue_of_book_aspx.GetTypeHashCode()': no suitable method found to override
来源错误：
Line 1253:
Line 1254: [System.Diagnostics.DebuggerNonUserCodeAttribute()]
Line 1255: public override int GetTypeHashCode() {
Line 1256: return -853658727;
Line 1257: }
有人会指导我吗？谢谢。
【问题讨论】：
-
没有任何示例代码我们无法判断问题所在
-
@Dorababu 我添加了我的代码，你会检查一下吗
-
显然您没有覆盖此代码中的方法。但是，它是一个部分类，您可以在 GetTypeHashCode 上进行搜索并检查它是否在也是该类的其他文件中被覆盖？我知道它应该是一个部分类，因为它是一个 aspx 代码隐藏文件，但最好确保它不会在其他地方使用（偶然？）
-
您的代码似乎没有任何覆盖，所以您能否提供完整的堆栈跟踪...我们将看到错误是从哪里生成的
-
看到这个你的页面被定义为 Issueofbook 并从源代码中检查你在设计部分后给出的名称
标签： asp.net