ADO.NET :: Invalid Attempt To Read When No Data Is Present?
Jan 11, 2011what will i do on this error? this is my code..
[Code]....
my error is in line
Label4.Text = lectureInfo[3].ToString();
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Invalid Attempt To Read When No Data Is Present?
Apr 21, 2010i got the error when try to select values from database "Invalid attempt to read when no data is present."
i used this code
SqlConnection con = new SqlConnection(ConfigurationManager.AppSettings["ab"].ToString());
SqlCommand cmd = new SqlCommand();
cmd.Connection = con;
cmd.CommandType = CommandType.Text;
cmd.CommandText = "select userid,password from pro_table where userid='"+TextBox1.Text+"'";
SqlDataReader dr;
con.Open();
dr = cmd.ExecuteReader();
dr.Read();
if (dr[1].ToString() == TextBox1.Text && dr[0].ToString() == TextBox2.Text)
{
Response.Redirect("welcome.aspx");
}
else
{
Label4.Text = "User id or password is invalid";
}
con.Close();
C# - Invalid Attempt To Read When No Data Is Present?
Mar 15, 2011I want to creat dynamic <asp:table ID=""...> and I want to have a totalAmount column by reading the first cell from my datareader and put it into total, this column must show the cumulative numbers....
try
{
sqlconnection();
[code]...
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Apr 3, 2010I am getting the following error when i am trying to assign values to controls on form via datareader, i know i got one row. but this particular field has no data in it.
I do have lot of other forms where i use the same style
getting this error: invalid attempt to read when no data is present
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Aug 27, 2010Invalid attempt to read when no data is present.Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.InvalidOperationException: Invalid attempt to read when no data is present.Source Error:
[Code]....
Here is my code:
[Code]....
What am i doing wrong?
Data Controls :: Server Error - Invalid Attempt To Read When No Data Is Present
May 7, 2015This is the problem:
Server Error in '/AviaBellaVidaChecklist' Application.
Invalid attempt to read when no data is present.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.InvalidOperationException: Invalid attempt to read when no data is present.
Forms Data Controls :: Invalid Attempt To Read When No Data Is Present?
Dec 5, 2010here, i want to read the data for sql table, but there has error occur. "Invalid attempt to read when no data is present."
protected void DropDownListSelectDateYYYY_SelectedIndexChanged(object sender, EventArgs e)
{
Session["selectDate"] = Session["month"].ToString() + '/' + Session["day"].ToString() + '/' + DropDownListSelectDateYYYY.SelectedValue.ToString();
System.Diagnostics.Debug.Print(Session["selectDate"].ToString());
}
string sqlstr = "select * from ATTENDANCE where staff_Name = '" + LabelEmpSelected.Text.Trim() + "'and attendance_Date = '" + Session["selectDate"] + "' ";
whic session["selectDate"] cann't match to the database column data which is mm/dd/yyyy
Data Controls :: MySqlDataReader - Invalid Attempt To Read When No Data Is Present
May 7, 2015I want to get the total data of my table and store into one variableThis is my code...but it gives me error like 'Invalid attempt to read when no data is present.'
try {
GetConnection();
MySqlCommand.CommandText = "Select COUNT(source) from [dbo].[Company_info] where source = '"+source+"'";
MySqlDataReader = MySqlCommand.ExecuteReader();
if(MySqlDataReader.HasRows==true) {
string sourcecount = MySqlDataReader[0].ToString();
MessageBox.Show("Data Inserted..!! : "+sourcecount);
}
}
catch {
}
MySql.Data.MySqlClient.MySqlException: Invalid Attempt To Read When Reader Is Closed
Jan 15, 2010so i have a content page that load some content into repeater one of the repeater items is UserControl, when the page is load for the first time everything is perfect, but if i try to do postback and reload the repeater i get this error:
Code:
Exception Details: MySql.Data.MySqlClient.MySqlException: Invalid attempt to Read when reader is closed.
this error is raised in the repeater databind event.
SQL Server :: Invalid Attempt To Call Read When Reader Is Closed?
Jan 28, 2011I have a function which allows me to quickly load SQL results into an SQLDataReader.
This is a very effective way for me to do this as it can be used for inserts, updates and selects very easily throughout my code.
However, I have noticed some potential memory issues with my site while using this (I keep having to do iisresets when working locally because all the pools are used up) so I am trying to use "Using" rather than "Dim" in an effort to ensure that the connection is always disposed.
I call the function in the following way:
Dim RS As SqlDataReader = SQL.Exec("sp_MyStoredProcedure " & ID)
If RS.Read Then
Return RS("Column_Name")
End If
RS.Close()
[Code].....
I now get the error "Invalid attempt to call Read when reader is closed" when calling the function on the line "If RS.Read Then".
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ADO.NET :: Linq2Sql Error: "Invalid Attempt To Call Read When Reader Is Closed"
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I have a RepositoryBase class that fields certain db calls that all repositories need to perform. In one such call, "GetSecurityGroup", it works most of the time, but will seemingly at random throw an exception with the error "Invalid attempt to call Read when reader is closed." All other Repository classes inherit from this one, and they all use the same DataContext object, which I understand isn't thread safe. Since there could be multiple calls to the DataContext object on the same page, perhaps one is using the DataContext when the next tries to do so. I'm not sure. What can I do to ensure this doesn't happen?
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Why the binding order is giving an error.
[Code]....
I am using Page.Databind() because of the following in .aspx file
[Code]....
I have following Functions in .cs file
[Code]....
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Mar 25, 2011I am creating a C# web application where I am attempting to extract data from my SQL Server and return the data in a single data stream into the properties of my object instance. Here is the code from my Presentation Layer where I am calling the Load method of my BLL:
[Code]....
Here is the code for the method in my BLL:
[Code]....
Here is the fillObject method from the BLL as well:
[Code]....
Here is the code from my DAL:
[Code]....
In the end I get an "Object reference not set to an instance of an object" error on the next line of code in my Presentation Layer. However, when I step through the code I notice the myDataReader in the BLL does not get populated and the step through actually errors out during the fillObject method at the line "myObject.string1 =" with the error stated in the title. I am not sure why the myDataReader in the BLL is closed and why I this does not work. At my work we have this same code logic only in VB.Net and it works perfectly. have any insight as to why this does not work in C# and how can I correct this?
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[Code]....
After:
[Code]....
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My code:
[Code]....
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[Code]....
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Exception Details: System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.
[Code]....
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