Dot(.) Net Learning

STREAM WRITER IN C#        A stream writer is used to append or to overwrite a text over another.                                             streamwriter stwriter =new streamwriter( document.txt );        It creates  a text named document.       If such a document already exists it replaces the previous one.       stwriter .Flush() :   It is used to flush or to clear a particular file or data       stwriter.Close() : It is used to close a particular stream.

   CURSORS IN C#      Cursor is the icon which moves when we move mouse on a screen in a page in a c# .      1,To set a what to do when a cursor is over a button or a text box.         button1. Cursor =  Cursors .Hand;        listBox1. Cursor = Cursors .No;                     

To Show a SerialNo in  a FlexGrid:        private void gridindex( C1FlexGrid flxName)             {                 for ( int i = 1; i < flxName.Rows.Count - 1; i++)                 {                     if (flxName[i, "SCode" ] + "" == "" ) { break ; }                     flxName[i, "SL NO" ] = i;                     counterflag = i;                 }    ...

Adding datas  From  A DataTable To A TextBox In c#  Form if (txtRepname .Text.Trim() == string.Empty)             {                 string sql = "SELECT TOP 1 [CODE], [HEAD] FROM [ACCOUNTS" + CPublic.g_firmcode                + "]WHERE GROUPCODE='15'";                 SqlCommand cmd = new SqlCommand(sql, CPublic.Comm_con);                 SqlDataAdapter ap = new SqlDataAdapter(cmd);                 DataTable dt = new DataTable();                 ap.Fill(dt);                 if (dt.Rows.Count > 0 && txtRepname.Text.Trim() == string.Empty)                 {             ...

To make Enter Key To Work As Tab: private void frmCoursemaster_KeyDown(object sender, KeyEventArgs e)         {             if (e.KeyCode = = Keys.Enter) SendKeys.Send("{TAB}");                 } To make BackSpace Key To Work As  Shift+Tab: private void frmCoursemaster_KeyDown(object sender, KeyEventArgs e)         {    if (e.KeyCode = = Keys.Back) SendKeys.Send("+{TAB}");        }

Adding Image to database MemoryStream ms = new MemoryStream();                     pbxCourseImage.Image.Save(ms, pbxCourseImage.Image.RawFormat);                     arrImage = ms.GetBuffer(); Retrieving image from Database MemoryStream ms         = new MemoryStream((byte[])dr["BROUCHURE"]);                     pbxCourseImage.Image    = Image.FromStream(ms);                     pbxCourseImage.SizeMode = PictureBoxSizeMode.StretchImage;                     pbxCourseImage.Refresh();

How to fill your gridview?           public void gridfill()         {             DataTable dtbl = new DataTable();             productSp spProduct = new productSp();             dtbl = spProduct.productViewAll();             dgvProduct.DataSource = dtbl;         } Add datas to datatable,then set datasource of grid to datatable.