ADO.NET :: Perform Update Operation In A Datatable Without Using Loops?
Mar 17, 2011I need to perform update operation in a datatable without using loops. Is there any way to perform update in a datatabel...
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Application Attempted To Perform An Operation?
Oct 1, 2010I have a function that finds a files MIME type for download purposes. I use this DllImport:
Code:
[DllImport("urlmon.dll", CharSet = CharSet.Unicode, ExactSpelling = true, SetLastError = false)]
static extern int FindMimeFromData(IntPtr pBC,
[MarshalAs(UnmanagedType.LPWStr)] string pwzUrl,
[MarshalAs(UnmanagedType.LPArray, ArraySubType = UnmanagedType.I1, SizeParamIndex = 3)] byte[] pBuffer,
int cbSize,
[MarshalAs(UnmanagedType.LPWStr)] string pwzMimeProposed,
int dwMimeFlags,
out IntPtr ppwzMimeOut,
int dwReserved);
I use this function:
Code:
#region GetMimeFromFile(string)
public static string GetMimeFromFile(string file)
{
IntPtr mimeout;
if (!File.Exists(file))
{
throw new FileNotFoundException(file + " not found.");
} //if
int maxContent = (int)new FileInfo(file).Length;
if (maxContent > 4096)
{
maxContent = 4096;
} //if
byte[] buff = new byte[maxContent];
using (FileStream fs = new FileStream(file, FileMode.Open))
{
fs.Read(buff, 0, maxContent);
} //using
int result = FindMimeFromData(IntPtr.Zero, file, buff, maxContent, null, 0, out mimeout, 0);
string mime = Marshal.PtrToStringUni(mimeout);
Marshal.FreeCoTaskMem(mimeout);
return mime;
}
#endregion
Locally, it runs fine. However, when I put it on a GoDaddy server, I get the error:
"The application attempted to perform an operation not allowed by the security policy. To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file. "
My stracktrace points to line 256, which is the ending french bracket of my GetMimiFromFile function.
SQL Server :: How To Extract The First Row And Perform A Certain Operation
Nov 9, 2010I'm a asp.net newbie trying to figure out how to do the following. I have a datatable. I want to extract the first row and perform a certain operation and a different operation on the remaining rows. How would I loop through the datatable to do this?
View 5 RepliesCancel A Long Running Database Insert / Update Operation From UI When Operation Is Being Performed By A Windows Service?
Mar 7, 2010in my case, It is the windows service which in running the long running insert/update on a table and I need to cancel the operation from my ASP.NET application. In the above link Burnsys suggests that one should kill the Sql server session. Is that really only way and a goood practice to do this? Also, in the same poset can use SqlCommand.Cancel to cancel. However, I am not sure how can I cancel the command from the windows service from ASP.NET application.
View 1 RepliesConfiguration :: Attempted To Perform An Unauthorized Operation?
Jun 15, 2010I use dynamic currency symbol(Doller,£,etc.,) for that the web config is updated in locally but in site I can not modifiy the web config file and I get the following error
"Attempted to perform an unauthorized operation."
Perform Multiple Write Operation On A Single File?
Nov 22, 2010I have a website in asp.net 2.0 which write some thing on a file. But at the same time if another user hit that site it does not work till the first one operation on the file completed after that second one can do operation with the files.
AppConfiguration appConfiguration = new AppConfiguration();
string LogFile =String.Empty;
string sLogFormat =string.Empty;
string sErrorTime =string.Empty;
[Code]....
Web Forms :: DataView RowFilter Error - Cannot Perform Like Operation
Apr 26, 2014In My Project We Filter Dataview Which Contail Integer and string value
sort data likes this
dvv.RowFilter = filterfor + " Like " + SearchExpression;
but when integer value is encounter Error occurredÂ
Cannot perform 'like' operation on system.int64 and system.string
Getting Exception / The Application Attempted To Perform An Operation Not Allowed By The Security Policy
Nov 10, 2010i have an dll file which is data access layer of my application.
i am getting this exception while accessing databse
Description:
The application attempted to perform an operation not allowed by the security policy. To grant this application the required permission contact your system administrator or change the application's trust level in the configuration file.
Exception Details:
System.Security.SecurityException: Request for the permission of type 'System.Data.SqlClient.SqlClientPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
Web Forms :: JavaScript Confirm Box Server Side Perform Operation On OK And Cancel
Aug 4, 2012I need to dispay confirm box on server Side.. senario is like Im Trying To upload Image During Upload Im Checking some properties like Image type,image size, etc.. While Uploading i want to check properties like
if(type=="xxxx")
{
confirmbox("Â ");
if(confirmvalue=="yes")
{
next condition
}
else
{
exit ;
}
}
like this i want check different properies of file.. how can i do this
Web Forms :: Security Exception - Application Attempted To Perform Operation Not Allowed By Security Policy
Apr 2, 2013Error:Â
Security Exception
Description: The application attempted to perform an operation not allowed by the security policy.  To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file. Exception Details: System.Security.SecurityException: Request for the permission of type 'System.Web.AspNetHostingPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.Local its run fine. when i place in iis. it throw this exception.
DataSource Controls :: Is It Possible To Perform A Query On A Datatable?
Feb 14, 2010My web application calls a stored procedure and stores the result in a .NET datatable. I'd like to use this datatable and join it with other tables in my database. Is this possible?
Would the best way to set this up be to create another datatable and then use a dataview to join both datatables?
ADO.NET :: Update Operation In Dataset?
Jan 5, 2011In my application i am having nearly 10 lacs row of data in a dataset with the columns like customer name,address,id,etc.. I have to update a single customer detail in the dataset using id.Is there any way for updating a customer details without using loops?
View 2 RepliesWeb Forms :: How To Get GridView Updated Row After Update Operation
Jun 20, 2012 <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
DataSourceID="SqlDataSource1" ForeColor="#990000"
AutoGenerateEditButton="True" onrowupdated="GridView1_RowUpdated"
[Code]....
 these are my avaiable controls on the page
now on clicking the update button
i want all the values to be displayed on textboxes as above mentioned
C# - GridView - How To Perform Custom Update Statements
Sep 21, 2010I have an ASP.NET GridView which displays a list of neighborhoods.
I wish a user (administrator) to be able to edit the neighborhood name.
Now, the database is quite complex, and as such, i can't simply provide an UpdateCommand / SqlDataSource for the GridView.
I bind the data manually (on first load, and on the PageIndexChanging event).
Binding/listing paged data is working fine.
However, i'm having trouble trying to UPDATE the data.
The user clicks the "Edit" button, the textbox for the neighborhood name is shown, i change the text, click "Update", but the RowUpdating event is not firing.
I basically want to grab the row that was edited, and perform a custom update using LINQ.
Is this not possible with a GridView? If it's not, what are my alternatives? A repeater with LinkButtons and a hidden textbox that can swap in/out the labels?
This is my GridView markup:
[Code]....
And the code-behind:
protected void NeighborhoodsGridRowUpdating(object sender, GridViewUpdateEventArgs e)
{
GridViewRow updatedRow = NeighborhoodsGrid.Rows[e.RowIndex]; // not firing. =(
}
I also have the GridView wrapped in an UpdatePanel, if that makes any difference (don't think it should).
AJAX :: Perform UpdatePanel.Update From Different Page?
Sep 17, 2010I have Page_A.aspx and Page_B.aspx
Page_A.aspx has a text box and a Send button.
Page_B.aspx has a Label control on it, inside an UpdatePanel
I want that when I type something in Page_A.aspx and click Send, the text of Label on Page_B.aspx should be updated with the text box text and the UpdatePanel should be updated. Is this possible?
Page_A.aspx:
[Code]....
Page_B.aspx:
[Code]....
AJAX :: Is It Possible To Perform A File Upload Within An Update Panel
Jul 21, 2010Is it possible to perform a file upload within an update panel.
View 2 RepliesData Controls :: Force GridView Row To Be Editable Even After Update Operation
Aug 6, 2012I want to do one thing that when i edit the gridview then it will not go back to main form for editing.it will remain there in the form for the row editable.
i-e when i edit any row then it will be editable on the gridview.
<asp:GridView ID="noticeDetails" runat="server" BorderWidth="1px" AutoGenerateColumns="false" PageSize="10" Width="10%" CellPadding="10"
AllowSorting="true" AllowPaging="true" AutoGenerateEditButton="true" onrowediting="noticeDetails_RowEditing"
onrowcancelingediting="noticeDetails_Rowcancelingediting"
[CODE] ...
DataSource Controls :: Can't Perform Create / Update Or Delete Operations
May 12, 2010when i want insert a record i see an error like this
Can't perform Create, Update, or Delete operations on 'Table(MainMenuLink)' because it has no primary key.
with this codes:
MyLinqDataClassesDataContext db = new MyLinqDataClassesDataContext();
MainMenuLink li = new MainMenuLink { Link ="../error/error.aspx", LinkSubject = "subject" };
db.MainMenuLinks.InsertOnSubmit(li);
db.SubmitChanges();
ShowLinks();
what is the problem?
my table have a primary key but i dont know why give an error!!!
Forms Data Controls :: Using A Gridview To Perform Bulk Update?
Feb 9, 2010I have a gridview with checkboxlist for each record. I was updating each record individually based on that check, but now they want it to be a bulk update instead of individual. So i have commented out my individual update and added a button below the gridview and created my button event, how to loop thru the gridview and find the checked records and call my update procedure.
i found something kinda close to what i need, but its in VB and not sure how to convert that to C#
[URL]
DataSource Controls :: SQL UPDATE Command - Perform Math Function From Value
Jun 27, 2010Is it possible to perform an update command which performs addition using a value from a textbox? For example: User inputs a number into TextBox1 (I use regular expression validation to ensure this is an integer).
[Code]....
Basically if the user inputs 5 into TextBox1, I want the update command to subtract 5 from that user's ballance.
Forms Data Controls :: How To Update A Gridview Footer With A Mathematical Operation
Jan 12, 2011I have two textBox, one button and one gridview. In one texbox, I enter a value, click the button to add this entry to the gridview and the footer is computing the sum as i add more entries to the gridview.
I also have a textbox outside the gridview that will hold an amount, now I want to perform an operation like...(txtOutsideGridview - gridviewEntry1 - gridviewEntry2), and display the result of this operation inside the footer of the gridview, instead of the sum. How do I go about doing this?
So far all I have been able to do is sum up the total of entries within the Gridview, but that is not my desired operation...here is what my current code looks like
[Code]....
Forms Data Controls :: How To Update A DataTable And Update Multiple Rows Due Sorting
Jan 17, 2010i want to build a datagrid bound to a datatable with several columns. One column has only a dropdownlist with the number of the rows in the datatable.
Here a samplescreenshot:
[URL]
I know how to bind the columns to a grid and its no problem to create such a dropdown list with the content for me, too. But i dont know how to sort the complete datatabl after changing one value of one dropdown listbox.
So, how can i resort the values of a datatable column based on a given value and the datarow id?
Forms Data Controls :: Use The Gridview To Actually Perform An INSERTand Not A True Update?
Dec 15, 2010if it's possible to use the Gridview (SQLDatasource) UpdateCommand to actually perform an INSERT and not a true update.Here's the dealUsing a Select statement in my SQLDatasource,I'm retrieving records for which there are no History records for a specified period.(Essentially, I'm asking "Show me all records for which there are no historical records within a specified range").I'm using that result set to feed my GridView. Basically, I'm displaying all I need to know about the insert records sans one piece of info.When the user choose the "Edit" button, the row goes into edit mode.Using a template field, I've created a drop down box to allow the user to input the status of the data for that particular time period.When they click the save button,the idea is that the UpdateCommand will fire.However, when I click the save button (in edit mode),I get a postback error that tells me System.Data.SqlClient.SqlException: Must declare the scalar variable "@EQP_PK".
[code]...
Php - Comet Style Application With Loops?
Dec 22, 2010Do all comet style applications require a loop somewhere in the application on the serverside to detect updates/changes? how the logic behind a loopless comet style application would work?
View 3 RepliesForms Data Controls :: How To Perform Edit/Update And Cancel In The Grid View
Oct 23, 2010how to perform Edit/Update & cancel in the grid view .. already the data is there in the gridview
[code]....