datatable and gridview

Question

i get all gridview data in data table and i want to save the selected row in database using get xml method but all record of data table are saved in database. i have checbox in all gridview row and one button after grid. 

 

i show the regarding code:

 

 

 

 

 

 

on button  cilck 

 

private DataTable CreateDataTable()

{

// dtable.Reset();

DataTable dtable = new DataTable();

dtable = (DataTable)ViewState["dsStudent"];

dtable.Columns.Add("InTime");

dtable.Columns.Add("OutTime");

dtable.Columns.Add("LeaveType");

dtable.Columns.Add("Remarks");

return dtable;

}

 

 

 

 

 

protected void btnAttendanceSave_Click(object sender, EventArgs e)

{

try

{

SetProperties();

DataTable dtable = CreateDataTable();

for (int i = 0; i < gvStudentAttendance.Rows.Count; i++)

{

TextBox txtInTime = (TextBox)gvStudentAttendance.Rows[i].Cells[2].FindControl("txtAttInTime");

TextBox txtOutTime = (TextBox)gvStudentAttendance.Rows[i].Cells[3].FindControl("txtAttOutTime");

DropDownList LeaveType = (DropDownList)gvStudentAttendance.Rows[i].Cells[4].FindControl("ddlAttLeaveType");

TextBox txtRemarks = (TextBox)gvStudentAttendance.Rows[i].Cells[5].FindControl("txtAttRemarks");

dtable.Rows[i]["InTime"] = txtInTime.Text;

dtable.Rows[i]["OutTime"] = (txtOutTime.Text);

dtable.Rows[i]["LeaveType"] = LeaveType.SelectedValue;

dtable.Rows[i]["Remarks"] = txtRemarks.Text;

gvStudentAttendance.DataSource = null;

gvStudentAttendance.DataBind();

}

DataSet ds = new DataSet();

ds.Tables.Add(dtable);

ds.DataSetName = "dsStudent";

ds.Tables[0].TableName = "AttendanceTable";

//ds.Tables[0].Columns.Add();

string _error;

if (cls_StudentAttendance_Obj.DML(2, ds, out _error) > 0)

{

GlobalMethods.AlertMsg(divError, divSuccess, "Attendance taken successfully.", 1);

Methods.ClearInputs(Page.Controls);

dtable.Columns.Remove("InTime");

dtable.Columns.Remove("OutTime");

dtable.Columns.Remove("LeaveType");

dtable.Columns.Remove("Remarks");

}

else

{

GlobalMethods.AlertMsg(divError, divSuccess, "Attendance not taken.", 0);

dtable.Columns.Remove("InTime");

dtable.Columns.Remove("OutTime");

dtable.Columns.Remove("LeaveType");

dtable.Columns.Remove("Remarks");

}

}

catch (Exception ex)

{

throw;

}

}