hi for change the size property u must first set autosize property to false.

form have an event which name is Paint. in this event u can use : e.Graphics.DrawLine(--,--,--)

i have a big problem ! when i change anything in my code project this error is appear : ""Unable to copy file "obj\Debug\Charge1.exe" to "bin\Debug\Charge1.exe". The process cannot access the file 'bin\Debug\Charge1.exe' because it is being used by another process."" but if i don't change anything it isn't appear, do anybody know how can i fix this error?

MSDN :Setting ShowNewFolderButton to false does not work on Windows 2000.

i can't understand your question clearly but i think your anwser is : you must first set Autopostback property of the checkbox to the true and then work with checkedchanged event like this code: protected void CheckBox1_CheckedChanged(object sender, EventArgs e) { if (CheckBox1.Checked) Response.Write("checked"); else Response.Write("unchecked"); }

first you must set the gridview DataSource: dataGridView1.DataSource =DS.tables["x"]; then u must add row to the DataTable for exmaple : a = a+1; b = textBox1.Text; dt.Rows.Add(new object[] { a, b}); after click the button to update data in database: scb = new SqlCommandBuilder(DA); DA.Update(DS, "tbhazine");

if you want update your data in datagridview in data base you must first define sqlcommandbuilder before your update command: SqlCommandBuilder sc=new SqlCommandBuilder(DataAdaptorname);

i fill 1 data table from database . i have 1 datagrid on the form that i fill it manually. can i add one of the columns of the data table to my datagrid? thank you :confused:

you must define it "Public Static" in form1 then u can use it without new form.

i think this could be worked CheckBox[] ch1 = new CheckBox[] { checkBox1, checkBox2, checkBox3, checkBox4 }; { for (int x = 0; x < 4; x++) if (ch1[x].Checked) { foreach (CheckBox ch in ch1) { if (ch.CheckState == CheckState.Unchecked) ch.Enabled = false; } } }

i fill 1 data table from database . i have 1 datagrid on the form that i fill it manually. can i add one of the columns of the data table to my datagrid? thank you

i think u can use stream writer and streamreader for save data or read data from the files. data set is in connection with xml . u just must add a xml file to your project and work with it. for send data to printer u can use crystal report or print prieview control(i think).if you use control u must use drawing namespace(or e.graphics for ex.) to draw your form and measure the line is in your page and your no's of print pages.

you must define diagram for your database that can define foriegn keys between your tables

DA1 = new SqlDataAdapter("select * from tbmohasebe where tarikh = '"+comboBox1.Text +"'" , conn1); DA1.Fill(dt1); //dt1 is Data table dataGridView1.DataSource = dt1; how can i hide some of columns in datatable that don't show in datagrid?