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Using C#.net we have created a custom Textbox control derived from System Textbox class. We alse have a customized design surface,toolbox,propertygrid. The control is dragged and dropped on the design surface and its properties are displayed in propertygrid.
1. Custom textbox is not directly linked to propertygrid ( propertygrid.selectedobject=ObjTextbox is not used)
2. When we change Location/Size of the control using mouse we are unable to update the propertygrid
3. The object resizing does not happen physically.
4. When we drag the control to a different location on design surface, control comes back to its initial position.
Any help is appreciated.
Thanks in advance.
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Hi,
Myself imran, I am quite new to dotnet. i am developing web application using asp.net and C#(Visual Studio 2005). i have defined connection string in web-config
Can any one help me to know How to Access database using this connetion string.
thanks
regards
imran khan
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Welcome to The Code Project.
Please don't post the same question all over the place. Pick the forum that best fits your question.
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b { font-weight: normal; }
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OleDbConnection dbConnection;
dbConnection = new OleDbConnection();
dbConnection.ConnectionString = "Provider = Microsoft.Jet.OLEDB.4.0; " +
"Data Source = " + Application.StartupPath + "\\Data.mdb";
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Hi ,
I want to windows application(C#/VB) example for MDI form and Child Form using menu strip (like as Visual Basic6.0).
Thanks in advance,
Rameshkumar
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When i try to open windows/web application(...in c#)....
its throwing the error message states that....visual c# 2005 compiler could not be created....the system cant find the object specified..... i reinstalled the whole frame work still its giving me the same error...
It is working for VB applications.
can anyone of u help me ...asap
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may be ur application is built in VS 2003 which first require conversion to VS 2005.
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I tried to insert some value to a table, I received the following error
<br />
no value given for one or more required parameters<br />
Here is the code; the ID field is the primary key autoincremented, I don't know how to set it; I simply set it to 1
<br />
OleDbConnection dbConnection;<br />
<br />
dbConnection = new OleDbConnection();<br />
<br />
dbConnection.ConnectionString = "Provider = Microsoft.Jet.OLEDB.4.0; " +<br />
<br />
"Data Source = " + Application.StartupPath + "\\Data.mdb";<br />
<br />
<br />
<br />
string sqlstr = "INSERT INTO Datas(ID, FirstName, LastName , Function, Description, SDate, EDate, THour)" +<br />
<br />
"VALUES(1, John, Do, FunctionOne, DescriptionOne, 12-02-03, 12-02-06, 20)";
<br />
<br />
<br />
OleDbCommand cmd = new OleDbCommand(sqlstr, dbConnection);<br />
<br />
<br />
<br />
try<br />
<br />
{<br />
<br />
dbConnection.Open();
<br />
cmd.ExecuteNonQuery();<br />
<br />
dbConnection.Close();<br />
<br />
}<br />
<br />
catch (Exception ex)<br />
<br />
{<br />
<br />
MessageBox.Show(ex.Message, "Database Error");<br />
<br />
}<br />
<br />
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if ID column is identity field
you are not suppose to include the column in insert list and values list
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You have forgotten to put apostrophes around the string values.
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b { font-weight: normal; }
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What do you mean by putting string? I assume you mean something like that 'FunctionOne', etc. I will try that this evening.
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There may be some other fields in the table which do not allow null values
or
John, Do, FunctionOne, DescriptionOne --- if these are variable then
may be values are null or empty string.
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how to write the query to select 10 record from database
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Depends where the 10 records are. SELECT TOP 10 will get the first ten records matching the criteria. If you want 10 records in teh middle or end then you have more work to do.
only two letters away from being an asset
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Select top 10 * from <tblname>
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ok how to get next 10 records from table ?how to write query to get it
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You need to retrive 20 records and ignore top 10 to get next 10 records
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or
Select top 10 * from agent where agentid not in (select top 10 agentid from agent)
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How to change the Border style of Listbox in ASP .net
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Type this in and once you press the . the intellisense should show you a list of border styles.
this.ListBox1.BorderStyle = BorderStyle.
www.DaytonaForums.com
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I have tryed this one But it will change
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I have tryed this one But it will not change
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primaryStyle.BorderStyle =BorderStyle.Dotted;
ListBox1.ApplyStyle(primaryStyle);
How about that?
_____________________________
www.DaytonaForums.com
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there is no property like Primarystyle
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Does the framework perform any non-garbage-collector operations that slow down applications at time scales similar to thsoe of garbage collections?
I ask because in my C# code, a certain operation has a measured average case time of a few microseconds, but once in a while one of these operations takes 5000 times longer than the average. This does not appear to be attributable to varying latency in the memory hierarchy or to variations in the code path followed during the operation. Also, I have verified that no garbage collections occur during these long operations by verifying that GC.CollectionCount did not change during the operation.
My timing measurements measure real time, so a factor of 5000 slowdown could easily be due to the operating system, but I thought I would ask here to see if there are any other operations going on in the framework too.
(I am working on a hash table implementation for a real time system; I am interested in the worst-case times for add, remove, and retrieve operations.)
By the way.. Is there a convenient way to time a block of code without using real time measurements such as with WIN32 API calls to QueryPerformanceCounter and the like? It would be especially nice if the data were accessible from within the program so that the program could report the data and compute auxiliary statistics, instead of having to rely on extra steps that are usually required when using a profiler.
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