How to clear array in c#?

Question

string[] text;

if (ds.Tables[0].Rows[0][i].ToString().ToUpper().Trim().Contains("NUMBER :"))
{
s01 = ds.Tables[s].Rows[0][i].ToString().Trim();
SpirNoSplt1 = s01.Split(':');
i = ds.Tables[0].Columns.Count;
}

i have use array and split and stored in array.now the loop is excute array is not cleared old value is hold in array.

i have use below code

text.clear()

but error occur

How to clear array ?

Rajeesh Menoth · Answer

Hi Use this code : Array.Clear(text 0 text.Length); Example : using System; public class Program { public static void Main() { string [] text; if ( true ) { string s01 = N:9999 ; text = s01.Split( ':' ); Console.WriteLine( Zeroth Position Value :  + text[0]); Console.WriteLine( First Position Value :  + text[1]); } Array.Clear(text 0 text.Length); Console.WriteLine( First Position Value :  + text[0]); //No value inside 0the position } } Demo : https://dotnetfiddle.net/Md0dcI Reference : https://www.dotnetperls.com/array-clear http://stackoverflow.com/questions/2673512/how-to-clear-an-array

Midhun T P · Answer

Hi What is the name of array you need to clear? SpirNoSplt1 or text?

Raja · Answer

hi Midhun T P i use this code also but showing 'use of unassigned local variable' error occur

Krishna Rajput Singh · Answer

Hi thank you for writing below links helpful for you.... https://www.dotnetperls.com/array-clear https://msdn.microsoft.com/en-us/library/system.array.clear%28v=vs.110%29.aspx?f=255&MSPPError=-2147217396

praveen kumar · Answer

text =[ ]; // to clear arrray

Midhun T P · Answer

Hi You should remove string[] text; from this function block and declare it globally as a public member - public string[] text; Now your ' use of unassigned local variable ' error will be resolved. Now use the code provided by me to Clear Array inside your function - Array.Clear( text 0 text .Length);

Midhun T P · Answer

Hi You haven't provided the code where you are calling the code provided by me. Array.Resize(ref text  0);

Midhun T P · Answer

Can you show the position where you are calling given code? If possible full block of code for particular function.

Midhun T P · Answer

Please try below code - Array.Resize(ref text  0);

Midhun T P · Answer

Hi Please try below code - Array.Clear( text 0 text .Length);

Raja · Answer

Thanks to all! Rajeesh Menoth Midhun T P Krishna Rajput Singh

Raja · Answer

public Boolean validate(DataSet ds) { int mn = 0; int count = 0; int y = 0; int x = 0; int rowcountvalue = 0; int t = 0; int c = 1; int rj = 0; string[] text; string s01 = string.Empty; string name1 = string.Empty; for (int i = 0; i < ds.Tables[s].Columns.Count; i++) { if (ds.Tables[0].Rows[0][i].ToString().ToUpper().Trim().Contains(NUMBER :))//SPIR Number taken { s01 = ds.Tables[s].Rows[0][i].ToString().Trim(); text = s01.Split(':'); i = ds.Tables[0].Columns.Count; } } name1 = text[1].ToString().ToUpper().Trim(); } Another strings are clear by (string.empty) but array only not cleared. :(

Raja · Answer

same error occur.i have declare the array in public.

Raja · Answer

hi Midhun T P sorry this is text not spirnosplt1. string[] text; if (ds.Tables[0].Rows[0][i].ToString().ToUpper().Trim().Contains(NUMBER :)) { s01 = ds.Tables[s].Rows[0][i].ToString().Trim(); text = s01.Split(':'); i = ds.Tables[0].Columns.Count; }