How can I load Controls With its data?

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Hi guys

I have two asp table. I create in the first table some checkboxes according to database programmatically and the second table also I add checkboxes according to checkboxes that selected from the first table, when I click button all of checkboxes disappear with its data.

C#

void Page_Load(object sender, ArgEvent e)
{
          DataView DV = Db.Qury("Select Id, Name from tblInputs");
          for(int i = 0; i < DV.Count; i++)
          {
               Table1.Rows.Add(new TableRow());
               TableCell cell = new TableCell();
               CheckBox chkbox = new ChackBox();
               chkbox.ID = DV[i][0].ToString();
               chkbox.Text = DV[i][1].ToString();
               cell.Controls.Add(chkbox);
               Table1.Rows[Table1.Rows.Count - 1].Cell.Add(cell);
           }
               

}
void Button_Click(object sender, ArgEvent e)
{
       for(int i = 0; i < Table1.Rows.Count; i++)
          {
               foreach(Control item in Table1.Rows[i].Controls)
               {
                     Checkbox chk = (Checkbox)item[0];
                     if(chk.Checked)
                     {
                            DataView DV = Db.Qury("Select Id, Name from Tranfer where InputId = " + chk.ID);
                          for(int i = 0; i < DV.Count; i++)
                         {
                                Table2.Rows.Add(new TableRow());
                                TableCell cell = new TableCell();
                                RadioButton Rdbtn = new RadioButton();
                                Rdbtn.ID = DV[i][0].ToString();
                                Rdbtn.Text = DV[i][1].ToString();
                                cell.Controls.Add(Rdbtn);
                               Table2.Rows[Table2.Rows.Count - 1].Cell.Add(cell);
                         }


                     }
               }
               
           }
}

The question: How can I save selected checkboxes and appear them after postback?

Sorry for English

Posted 4-Sep-15 5:02am

Ammar Al-hamdabni

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Comments

Samira Radwan 4-Sep-15 11:42am

store your table in a session. When update the session write it back to your table.

Ammar Al-hamdabni 4-Sep-15 12:01pm

I tried that in button click but doesn't work because on page loading clear them before click

Samira Radwan 4-Sep-15 12:21pm

sure it will! add your session on page load between if (!IsPostBack). Then assign the session to DataTable on button click. Once updated assign it back to the session.

Ammar Al-hamdabni 4-Sep-15 13:46pm

Can you alter the code as you said

Abdul Samad KP 4-Sep-15 19:23pm

You are right , since the controls are generated at runtime , you have to place your code outside the if(!IsPoastBack) block, but in that case your code should work properly.
So I am deleting my answer.
I guess the code you have posted is not the original one, because there are many errors in that.

Ammar Al-hamdabni 5-Sep-15 4:45am

You are right, the code I wrote it as I kept it, Thank you Abdul Samad and Samira

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Samira Radwan · Accepted Answer · 2015-09-04T10:46:00

As Abdul Samad KP answered in page_Load
Then add your table to asession

C#

void Page_Load(object sender, ArgEvent e)
{
     if (!IsPostBack)
 
     {
          DataView DV = Db.Qury("Select Id, Name from tblInputs");
          for(int i = 0; i < DV.Count; i++)
          {
               Table1.Rows.Add(new TableRow());
               TableCell cell = new TableCell();
               CheckBox chkbox = new ChackBox();
               chkbox.ID = DV[i][0].ToString();
               chkbox.Text = DV[i][1].ToString();
               cell.Controls.Add(chkbox);
               Table1.Rows[Table1.Rows.Count - 1].Cell.Add(cell);
           }
Session["mytb"]=Table1;
        }       
 
}

protected void btn_Submit_Click(object sender, EventArgs e)
{
//Here assign DataTable to the Session, modify/update the DataTable
DataTable mytb = (DataTable)Session["mytb"];  
//after updating/modifying datatable assign it back to your table. Something like:
Table1=mytb;
}

I didn't test the code but the logic should be good
Hope it helps!

Regard,
Samira