how we can create a datareader from a datatable. please suggest any way to solve this problem.

i am working on three tier architecture. and i need to know when an exception is generated from database DAL just do nothing and roll it to the BLL.BLL accept it and its a webservice. now i want to save my Database exception error code that was sent from the Database because when webservice genrate a soap execption my object that was generated from database lost its values. how i can get only my error message from the system exception object. because the message is too big when it comes from DAL........ what u people suggest what i should do tu retain my values of system exeption to send then into the my presentation layer.

i want to get a value of cell where check box is clicked. and geeting an error of Oject Refence is not set to an instance of an object. plz tell how i can get a value foreach (GridViewRow row in GridView1.Rows) { bool result = ((CheckBox)row.FindControl("CheckBox1")).Checked; if (result) { //error is Oject Refence is not set to an instance of an object. String id = ((TextBox)row.Cells[0].FindControl("TextBox1")).Text; } }

i have a form in which i put a fileupload control to upload a file and actually save its path in data base. now i actually want that when i upload a image that should also display on the form how can i do it and how i can display a image at runtime after getting its path. and another question is how i can access a cs file variable in my aspx file. like if a image url and i want to set it as a src value of image how can i do it like in my cs file i have declare a variable string myim; and in aspx file how i will access it thanks in advance

hello i want to know that if we use gridview with sqlDataSource what are the disadvantages. and what are the benefits if we use it without sqlDataSource then we have to write down all the code to handle add,del,edit events is there are any other disadvantages. please reply soon

yes i have tried all even i read many articales in codeproject also. they are very complex and webbased. i dont understand them i read one artical http://www.codeproject.com/aspnet/ChkBoxInGrid.asp i want to do the same thing but in windows form. i dont understand how to bind checkbox with datagrid.and i want to display checkboxe with every row of datagrid. so plz help me

i want to add first column of datagrid as checkedbox against every row of datagrid. then from the list i will select some checkboxes according to need.how i will implement this thing plz tell me any simple way. reply soon.

i want to add first column of datagrid as checkedbox against every row of datagrid. then from the list i will select some checkboxes according to need.how i will implement this thing plz tell me any simple way. reply soon.

Suppose i have two buttons btn1 and btn2 and i have created a click event function of btn1. now if i want to call btn1 click event function when user click btn2 please tell me soon

i want to make a copy of one of my existing form including its design view with in that project. i am not able to copy its design view how can i do it please tell me soon.....

so for all special char i have to check seprately. is there is any method to check all of them at once or user would be not able to enter special char thanks

in a textbox when user enter some input after that i want to check wether user enter only alphanumeric values or any special char like *&$@!":. if user does i will inform the user that input string is not valid my question is how i will find out that user has entered special char. reply soon

i am using a datagrid and if currently i am in a row of datagrid and i want raise an event of datagrid row becoze there is not predefined event for the row of grid. focus is on grid row how i will use key press event plz tell me.

i have different textboxes in my from on one textbox when i press a tab key i want print one messagebox i am writing thiss code but its not working on tab key although its working on like back key but not on tabkey plz tell me Private Sub ItemCode_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles ItemCode.KeyPress If (e.KeyChar = Microsoft.VisualBasic.ChrW(9)) Then MessageBox.Show("u have pressed tab key") End If

i have different textboxes in my from on one textbox when i press a tab key i want print one messagebox i am writing thiss code but its not working on tab key although its working on like back key but not on tabkey plz tell me Private Sub ItemCode_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles ItemCode.KeyPress If (e.KeyChar = Microsoft.VisualBasic.ChrW(9)) Then MessageBox.Show("u have pressed tab key") End If

plzzzzzzzzz tell me soon

hello i want bind only one row with the textboox is it possible like i am doing that when user selects a data from the data grid all its columns values displayed on the realted textboxes plz help me and tell me the how i can so this. " i have find the reference of the current row clicked by the user and store it into a datarow object but what should i do further to diplay its values on the textboxes" reply as soon as possible

hello i want to bind a pirticular row of my table with the textboxes which i have in my form. i am getting that row from the datagrid and that is a current row which is clicked by the user. i have saved that row refernce in a seprate datarow object. now how i will select that pirticular row from my table and display the values of each column in realted textbox Dim xCM As CurrencyManager Dim drw As DataRowView Dim row As DataRow xCM = CType(DataGrid1.BindingContext(DataGrid1.DataSource, DataGrid1.DataMember), CurrencyManager) '= drw = CType(xCM.Current, DataRowView) row = drw.Row Me.ItemCode.DataBindings.Add("Text", ds.Tables(0), "locid") the last line bind the first row but i want to bind a cuurent row which is clicked by the user on the datagrid and want to display its values plz help me as soon as possible

hello i write this code from differnt examples.i want to use dataset in my code but i think dataset is working but this code is inserting data into my table tell me how i can i modify to get benefit of dataset. plz help me soon. Dim mycon As OdbcConnection Dim ds As New DataSet mycon = New OdbcConnection("DSN=BLTPS;APP=Microsoft® Visual Studio .NET;WSID=BLHOMEPC;DATABASE=BLTPS;Trusted_Connection=Yes") Dim selectString As String = "SELECT * FROM icloct" mycon.Open() Dim myOdbcCommand As New OdbcCommand myOdbcCommand.Connection = mycon Dim adapter As OdbcDataAdapter adapter = New OdbcDataAdapter(selectString, mycon) adapter.SelectCommand = New OdbcCommand(selectString, mycon) adapter.Fill(ds, "icloct") myOdbcCommand.CommandText = "INSERT INTO icloct(locid, locdes, adduser, adddate, addtime)VALUES ('klm','yes', '', '', '')" adapter.InsertCommand = myOdbcCommand myOdbcCommand.ExecuteNonQuery() adapter.Update(ds, "icloct") mycon.Close()

actuualy i have worked on oledb but not on ODBC. i have read a example in it they use ADODB but when i use it in my code it gives me error. there is no namespace of this name how i can use it plz tell me