StringBuilder.Append using float is truncating the value. What is it converting to and how can I stop it from truncating?AttributeOrder is type float and I am losing precision when building the string.
if ( AttributeOrder != 0 )
{
if ( Result.Length > 0 )
[code]...
Actually I am wishing to use StringBuilder to Append DataTable as given below:
[Code]....
correct the line sb.Append(dt.Rows[i].Item(k, DataRowVersion.Current).toString()); to eliminate the following error:
'System.Data.DataRow' does not contain a definition for 'Item' and no extension method 'Item' accepting a first argument of the type 'System.Data.DataRow' could be found (are you missing a using directive of an assembly reference?).
Is StringBuilder a datatype?
View 9 RepliesI've a string builder, and I need to convert it to a string, and then trim any commas if there are any there (I need to get rid of them because I'm building an sql query).
Here's what I'm doing:
myStringBuilder.ToString().TrimEnd(',');
Why isn't this working??? It's not trimming any commas at the end!
I'm using c# :)
I have a message on one and I'm sending that message to another using a Session. The problem is the message come out on one line, please code
[Code]....
Output: --- Original Message ---message for the user.
Output should be:
Original Message
message from the user. How do get the info on two lines?
How do I delete or clear a string? Preferable delete...
So far I've tried:
myString.TrimEnd(0, myString.Length);
myString.Remove(0, myString.Length);
myString = null;
None of the above work...
Also- how do i clear a stringbuilder? Is it in the same way?
I'm using c# and working in Visual Web Developer.
I have a loop where i create some string value based on certain conditions. I did place StringBuilder object outside of the loop and each time i have new row in loop i need to clear StringBuilder appended values for this row.
How do i clear those?
[Code]....
How to display an image using the stringbuilder in C#.net
View 6 RepliesI'm building a product catalog which displays between 50/100 products per page.Since I want to have different browse sections on my site I've put each product into a UserControl. Well, not the products themselves ofcourse, but some labels, divs and images. I then set its properties in run-time when processing the database results. So the advantage is that I only have to change the product control at 1 place for the whole site. I'm putting the controls in a page using LoadControl in a loop.
However the pages are not loading quite as fast as other pages which process the same db query and output the same html using a StringBuilder. And since I want my site to perform well if/when it receives some decent traffic I'm worried about this. I haven't done any benchmarkings yet but I clearly see the difference. My questions to you is 'Are there any alternatives which are faster then using LoadControl with a customcontrol but are easily maintained (or atleast in 1 location)?'I was thinking of:
Creating a customcontrol (although I've never done it and don't know 100% if this will speed things up)Continue with the StringBuilder method and put the CreateProduct in my base class
[edit]Code[/edit]
I don't have the excact usercontrol code here but I will edit this post when I get home..but here is the simplified idea:
1) Getting my database result (using Subsonic 2.2 as my DAL)
DAL.ProductCollection coll = new DAL.ProductCollection();
if(coll.count > 0)
{
foreach(DAL.Product item in coll)[code]....
My usercontrol itselves just consists of 3 Literal controls and 1 Image control.
Im developing a web application in asp.net where i have gridview with some text box controls in it.In runtime we are creating a new row dynamically by clicking add button .To insert data into the database.i used a stringbuilder instead of string becoz the data what i have to insert into database is more.but i am gettin the following error No mapping exists from object type System.Text.StringBuilder to a known managed provider native type. in database the datafield column datatype is varchar(max).
View 3 Replies[Code]....
basically the name of my package is pkg_test and it is in the finance schema and the name of the function in the package is called get_nameHowever everything I run that function, it is gives me an error.
i have a stringbuilder which loops thru the items details of my shopping cart like below:
StringBuilder sbo = new StringBuilder();
for (int i = 0; i != Cart.Order.Items.Length; ++i)
{
sbo.AppendLine(
string.Format(
"{0} {1} {2} {3} <br />",
Cart.Order.Items[i].ItemNumber,
Cart.Order.Items[i].ProductTitle,
Cart.Order.Items[i].Size,
Cart.Order.Items[i].Price.ToString("c")
)
);
}
now i would like to bind these details to 4 labels like lbItemno, lbProdTitle, lbSize, lbPrice.
i have been trying to create controls dynamically on my web page using the StringBuilder class..and i dont quite seem to get through...
i am trying to do this...
StringBuilder sbTest = new StringBuilder(string.Empty);
sbTest.Append("<input type="text" id="txt1" runat="server" />");
Response.Write(sbTest.ToString());
The page for sure displays a TextBox on the browser which is easily accessible through JavaScript...but what i want is the control to be available on the Server Side too...so that when the page is posted back to the server i can easliy obtain the value that has been entered by the user into the textbox.
I am converting HTML to Pdf using StringBuilder .. added one image using
Doc theDoc = new Doc();
System.Text.StringBuilder sbHtml = new System.Text.StringBuilder();
sbHtml.Append("<html>");
sbHtml.Append("<body>");
sbHtml.Append("</table></td> <td width='406' height='104'><div align='right'><img src='~/images/logo.jpg'
[Code] ....
Here image is not displaying in PDF ....
if i change the code and put checkbox between the <td> tag. when i click the save button, how can i check the ticked checkbox and get the value of the CHECKBOX_1 in cs?
[Code]....
I have been led to believe that the performance benefits of using StringBuilder over normal concatenation means that you should always use stringbuilder when concatenating more than 2 strings. However when I test them this does not seem to be the case. Take these 2 methods
public void TestMethod5()
{
for (int i = 0; i < 1000; i++)
{
string t = string.Empty;
t = "dddddddd" + "dddddddd" + "dddddddd" + "dddddddd" + "dddddddd" + "dddddddd" + "dddddddd" + "dddddddd" + "dddddddd" + "dddddddd" + "dddddddd" + "dddddddd" + "dddddddd"; ;
}
}
public void TestMethod6()
{
for (int i = 0; i < 1000; i++)
{
StringBuilder sb = new StringBuilder();
sb.Append("dddddddd");
sb.Append("dddddddd");
sb.Append("dddddddd");
sb.Append("dddddddd");
sb.Append("dddddddd");
sb.Append("dddddddd");
sb.Append("dddddddd");
sb.Append("dddddddd");
sb.Append("dddddddd");
sb.Append("dddddddd");
sb.Append("dddddddd");
sb.Append("dddddddd");
sb.Append("dddddddd");
string t = string.Empty;
t = sb.ToString();
}
}
TestMethod5 takes 0.03 milliseconds so complete but TestMethod6 takes 1.43 milliseconds What is going on?
when we store more than one string in arraystring or in stringbuilder class objects.then how can we print it on alert box in asp.net
View 1 Repliesin my webapp I've created and populated a stringbuilder for a csv file. Normally I write it directly to the response object for the user to download through the browser.However, now I want to save it to a SQL DB image field. Is there a direct way to stream it in? Or do I have to save it to file first, then read it back in?
View 3 Replieshow can i do the split function like excel in stringBuilder?
View 4 Repliesi can get the checkbox value from the stringBuilder by request.form["field_id"].toString(), but how can i make the checkbox checked property to checked using C#.
[Code]....
Why is this function not true?float riw;
riw = 3.33;
if(riw == 3.33) // < --- THIS IS EVALUATING FALSE?!?!
{
// do something
}
//but this is evaluating true below
if(riw > 3.33)
{
//do something
}
I'm trying to format float from simple 200 to 200,00. How to do it if I want to use attribute in model:
[DisplayFormat(DataFormatString="{0:F2}")]
Model:
namespace MyExample
{
public class myList
{
[DisplayFormat(DataFormatString = "{0:MM/dd/yyyy}")]
public DateTime myDate { get; set; }
[Code]....
I have a web application which talk to Oracle for Database Operations.I want to what will be the equivalent datatype for float in c#.ie for Oracle Varchar2 , in c# we can give string like that for Float in oracle what will we give in C#
View 1 RepliesWhen i am trying to update a text box value to data base ,say 3.1 it is getting updated as 3.09999... when iam running the stored procedure in query analyzer it is updating correctly. When i am updating the same from page , it is giving this problem. Iam using sql server 2005.
Iam using float for this
I want to create new string or stringbuilder based on condition; Example . I am updating a count variable "i"; if i = 100, i need to create a string or stringbuilder; if else i = 200 i need to create a new string or stringbuilder; if else i = 300 i need to create a new string or stringbuilder; and so on how i can achive this?
View 8 Replies
