我正在检查数据库表中是否存在一个密封编号，但是当我使用存储过程或其背后的存储过程时，它不起作用。存储过程生成错误消息，但如果它不存在，它会在值存在时告诉我没有提供值。从它背后的代码中可以看出这个错误：集合被修改了；枚举操作不能执行。
代码隐藏
protected void showData()
{
#region Seal
SqlCommand R = new SqlCommand("PP_SealRecord", objConnection);
R.CommandType = CommandType.StoredProcedure;
R.Parameters.AddWithValue("@loadSheetNum", dispatchSheetNo);
objConnection.Open();
SqlDataReader Reader = R.ExecuteReader();
int maximumTextBoxCount = 7;
if (Reader.Read())
{
ControlCache = new List<Control>();
phSealNum.Controls.Clear();
for (int i = 0; i < maximumTextBoxCount; i++)
{
TextBox txt = new TextBox();
string index = string.Format("seal{0}", i + 1);
if (Reader[index] != DBNull.Value)
{
txt.Text = (string)Reader[index];
}
else
{
continue;
}
phSealNum.Controls.Add(txt);
phSealNum.Controls.Add(new LiteralControl(" "));
ControlCache.Add(txt);
txt.Width = 100;
//txt.Enabled = false;
}
}
Reader.Close();
objConnection.Close();
#endregion}
protected void Update_Click(object sender, EventArgs e)
{
#region Seal Data
string str = null;
int countseal = 0;
foreach (TextBox textBox in phSealNum.Controls.OfType<TextBox>())
{
string constr = ConfigurationManager.ConnectionStrings["TWCL_OPERATIONSConnectionString"].ConnectionString;
using (SqlCommand comm = new SqlCommand("PP_CountSeal"))
{
comm.Connection = con;
con.Open();
comm.CommandType = CommandType.StoredProcedure;
str = textBox.Text.TrimEnd();
comm.CommandType = CommandType.StoredProcedure;
string seal1 = string.Format("@seal{0}", countseal);
comm.Parameters.AddWithValue(seal1, str);
int count = (int)cmd.ExecuteScalar();
string name = HttpContext.Current.User.Identity.Name;
if (count > 0)
{
SqlCommand command = new SqlCommand("PP_SealRecord", con);
command.CommandType = CommandType.StoredProcedure;
command.Parameters.AddWithValue("@loadSheetNum", dispatchSheetNo);
SqlDataReader data = command.ExecuteReader();
if (data.Read())
{
string previousseal1 = Convert.ToString(data["seal1"]);
string previousseal2 = Convert.ToString(data["seal2"]);
string previousseal3 = Convert.ToString(data["seal3"]);
string previousseal4 = Convert.ToString(data["seal4"]);
string previousseal5 = Convert.ToString(data["seal5"]);
string previousseal6 = Convert.ToString(data["seal6"]);
string previousseal7 = Convert.ToString(data["seal7"]);
EditSeal(dispatchSheetNo, previousseal1, previousseal2, previousseal3, previousseal4, previousseal5, previousseal6, previousseal7, name);
}
}
else
{
// INSERT STATEMENT
CreateSeal(loadsheet, CreatedBy);
}
#endregion
}
//Creates history when seal is updated
protected void InsertSealHistory()
{
SqlConnection con = new SqlConnection(connection); //SQL Connection
con.Open();
#region Get Seal Record
SqlCommand cmd = new SqlCommand("PP_SealDataRecord", con);
cmd.CommandType = CommandType.StoredProcedure; //SQL Command Type is Stored Procedure
cmd.Parameters.AddWithValue("@loadsheetnum", dispatchSheetNo);
SqlDataReader dr = cmd.ExecuteReader();
string sealNumber = "";
string CreatedBy = "";
DateTime? DateCreated = null;
while (dr.Read()) {
sealNumber = dr["sealNumber"].ToString();
CreatedBy = dr["CreatedBy"].ToString();
DateCreated = Convert.ToDateTime(dr["DateCreated"].ToString());
}
dr.Close();
con.Close();
#endregion
#region Insert Seal History
con.Open();
SqlCommand I = new SqlCommand("PP_CreateSealDataHistory", con);
I.CommandType = CommandType.StoredProcedure;
I.Parameters.AddWithValue("@LoadSheetNum", dispatchSheetNo);
I.Parameters.AddWithValue("@SealNumber", sealNumber);
I.Parameters.AddWithValue("@CreatedBy", CreatedBy);
I.Parameters.AddWithValue("@DateCreated",DateCreated);
I.ExecuteNonQuery();
con.Close();
#endregion
}
protected void EditSeal(string num, string a, string b, string c, string d, string e, string f, string g, string user)
{
SqlConnection con = new SqlConnection(connection); //SQL Connection
con.Open();
int maxPossibleTextBoxCount = 7;
int selectedTextBoxCount = phSealNum.Controls.OfType<TextBox>().Count();
int emptyTextBoxCount = maxPossibleTextBoxCount - selectedTextBoxCount;
SqlCommand U = new SqlCommand("PP_updateSeal", con);
U.CommandType = CommandType.StoredProcedure;
U.Parameters.AddWithValue("@loadsheetNum", num);
foreach (TextBox textBox in phSealNum.Controls.OfType<TextBox>())
{
if (!Regex.IsMatch(textBox.Text.Replace(" ", ""), @"(^([0-9]*|\d*\d{1}?\d*)$)"))
{
lblError.Text = "Please enter only numeric values for seal number";
return;
}
else if (textBox.Text == "")
{
lblError.Text = "Please enter seal number";
return;
}
else
{
countSeal += 1;
Session["CountSeal"] = countSeal;
if (countSeal == 1)
{
string seal = string.Format("@previous_seal{0}", countSeal);
U.Parameters.AddWithValue(seal, a);
}
else if (countSeal == 2)
{
string seal = string.Format("@previous_seal{0}", countSeal);
U.Parameters.AddWithValue(seal, b);
}
else if (countSeal == 3)
{
string seal = string.Format("@previous_seal{0}", countSeal);
U.Parameters.AddWithValue(seal, c);
}
else if (countSeal == 4)
{
string seal = string.Format("@previous_seal{0}", countSeal);
U.Parameters.AddWithValue(seal, d);
}
else if (countSeal == 5)
{
string seal = string.Format("@previous_seal{0}", countSeal);
U.Parameters.AddWithValue(seal, e);
}
else if (countSeal == 6)
{
string seal = string.Format("@previous_seal{0}", countSeal);
U.Parameters.AddWithValue(seal, f);
}
else
{
string seal = string.Format("@previous_seal{0}", countSeal);
U.Parameters.AddWithValue(seal, g);
}
string seal1 = string.Format("@seal{0}", countSeal);
U.Parameters.AddWithValue(seal1, textBox.Text);
}
}
// Here we add the parameters for the non-selected textboxes.
if (emptyTextBoxCount > 0)
{
for (int i = 0; i < emptyTextBoxCount; i++)
{
countSeal += 1;
Session["CountSeal"] = countSeal;
string seal = string.Format("@previous_seal{0}", countSeal);
string seal1 = string.Format("@seal{0}", countSeal);
U.Parameters.AddWithValue(seal, System.DBNull.Value);
U.Parameters.AddWithValue(seal1, System.DBNull.Value);
}
}
U.Parameters.AddWithValue("@lastUser", user);
//U.Parameters.Add("@outmessage", SqlDbType.Char, 500);
//U.Parameters["@outmessage"].Direction = ParameterDirection.Output;
U.ExecuteNonQuery();
//lblError.Text = (string)U.Parameters["@outmessage"].Value;
con.Close();
showData();
}
protected void CreateSeal(string num, string user)
{
SqlConnection con = new SqlConnection(connection); //SQL Connection
con.Open();
SqlCommand U = new SqlCommand("PP_CreateSealNumber", con);
U.CommandType = CommandType.StoredProcedure;
int counter = 1;
int maxPossibleTextBoxCount = 7;
int selectedTextBoxCount = phSealNum.Controls.OfType<TextBox>().Count();
int emptyTextBoxCount = maxPossibleTextBoxCount - selectedTextBoxCount;
foreach (TextBox textBox in phSealNum.Controls.OfType<TextBox>())
{
if (!Regex.IsMatch(textBox.Text, @"(^([0-9]*|\d*\d{1}?\d*)$)"))
{
lblError.Text = "Please enter only numeric values for seal number";
return;
}
else
{
string seal = string.Format("@seal{0}", counter++);
//command.Parameters.AddWithValue(seal, textBox.Text);
U.Parameters.AddWithValue(seal, textBox.Text);
}
}
// Here we add the parameters for the non-selected textboxes.
if (emptyTextBoxCount > 0)
{
for (int i = 0; i < emptyTextBoxCount; i++)
{
string seal = string.Format("@seal{0}", counter++);
//command.Parameters.AddWithValue(seal, textBox.Text);
U.Parameters.AddWithValue(seal, DBNull.Value);
//command.Parameters.AddWithValue($"@seal{counter++}", DBNull.Value);
}
}
U.Parameters.AddWithValue("@loadsheetNum", num);
U.Parameters.AddWithValue("@lastUser", user);
U.ExecuteNonQuery();
con.Close();
showData();
}
protected void TotalSeal_SelectedIndexChanged(object sender, EventArgs e)
{
populate();
}
//Populates the amount of textbox based on the value selected from the drop down
public void populate()
{
//ControlCache = new List<Control>();
//phSealNum.Controls.Clear();
int targetCount = Convert.ToInt32(TotalSeal.SelectedItem.Value);
int currentItems = phSealNum.Controls.OfType<TextBox>().Count();
int totalitems = targetCount - currentItems;
if (totalitems <= 7)
{
for (int i = 0; i < totalitems; i++)
{
TextBox tx = new TextBox();
tx.MaxLength = 10;
tx.Width = 100;
phSealNum.Controls.Add(tx);
phSealNum.Controls.Add(new LiteralControl(" "));
ControlCache.Add(tx);
}
}
else
{
lblError.Text = targetCount + " exceeds number of seals";
}
}
1条答案
按热度按时间ia2d9nvy1#
在循环中迭代时，集合phsealnum.controls.oftype（）是否被修改？请检查一下，让我知道。