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Vb.net - Get The Number Of Rows Returned By OleDbDataReader?


After connecting to a database using DataReader, how can I count the number of rows ?


View 2 Replies (Posted: Jun 18 10 at 0:30)

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ADO.NET :: Get Number Of Returned Rows By Data Reader?
I have a web page where I want to return number of returned rows by datareader as I need to get Count of rows. My code is as follow :

SqlCommand cm = new SqlCommand(); SqlDataReader dr;sqlconnection cn; public int Returndatareader( int x)
{
int s;
string sqlstr = "SELECT COUNT(*) FROM P_Events as Counter";
cm.CommandText = sqlstr;
cm.Connection = cn;
cn.Open();
dr = cm.ExecuteReader();
if (dr.Read())
{
int y = dr.RecordsAffected;
s = y;
//return y;
}
cn.Close();
return x;
}

but the rows affected count is -1 everytime i run my code.

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[Code]....

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Right now I have it in the btn_click event, but in order to get it to count the rows you have to hit the button twice since the query is not returned yet. Here is my code.

[Code]....

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[Code]....

[Code]....

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[code]...

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[Code]....

protected void Page_Load(object sender, EventArgs e)
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Posted: Oct 08, 2009 07:08 AM

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[Code]....

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