hexadecimal convertions and add on datagrid

Mohammad Dabaan

hello all, am making a project that has a datagridview that will be filed from a SQL DB, 1) there si a field in the DB that has a data in hexadecimal format, so how i can fill it after converting it to string. 2) what is the process of allowing the user to add, delete and update on the datagridview directly?? sorry for the ones who see that i ask an easy questions :(( but they are not easy 4 all of ones as u see :->

Thanks alot Hamody

gauthee

hi, when u write the query to retrieve the data, convert the hexadecimal value to a string so that ur table will not have any column with hexadecimal values. you can use edit, update, cancel and do the required manipulations on the datagrid, write the required logic in few methods and assign these methods accordingly to the datagrid events!!!

Gautham

Mohammad Dabaan

thanks, but how i can convert from hexadecimal to string, io dont know the function to do this. have u an example on add, delete, update on the datagridview :confused:

Thanks alot Hamody

Luc Pattyn

Hi, int.Parse(myString, NumberStyles.AllowHexSpecifier); will do it; I find the style name confusing, it means read-as-hex but does not allow the 0x specifier ! :)

Luc Pattyn

gauthee

datagrid examples:http://www.4guysfromrolla.com/webtech/122300-1.shtml give me a detailed explaination reg the hexadecimal prblm....

Gautham

Mohammad Dabaan

i tried it as: string hhhh; hhhh=int.Parse("ffff", NumberStyles.AllowHexSpecifier).ToString(); MessageBox.Show(hhhh); use using System.Globalization; as name space but it hasnt convert the hex to string what can i do ???:sigh:

Thanks alot Hamody

Mohammad Dabaan

ok thanks first,,, i mean that i have SQL database table which has a field containg hexadecimal data (arabic converted to hexadecimal) i want 2 show converted data on the datagridview ;P

Thanks alot Hamody

Luc Pattyn

Your code seems right. This code snippet works for me:

	public override void Run(int arg) {
		hex("12");
		hex("1234");
		hex("1aBd");
		hex("FFFF");
		hex("ffff");
	}

	public void hex(string s) {
		int i=int.Parse(s,NumberStyles.AllowHexSpecifier);
		log("hex "+s+" = decimal "+i);
	}

It produces

hex 12 = decimal 18
hex 1234 = decimal 4660
hex 1aBd = decimal 6845
hex FFFF = decimal 65535
hex ffff = decimal 65535

so I expect your problem is elsewhere. :)

Luc Pattyn

gauthee

Check this link: http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=1161100&SiteID=1

Gautham