Specified argument was out of the range of valid values

Question

I m adding dynamic Rows in ASP Net GridView Control with TextBoxes  But I m getting the error below when I click on my Add New Row button      Specified argument was out of the range of valid values  Parameter name  index   What could be the error    Th code in my  aspx file   lt div id  Div1  class  divTable  gt       lt asp gridview id  Gridview1  runat  server  autogeneratecolumns  false  gridlines  None          width  100   height  100   gt               lt Columns gt                   lt asp TemplateField gt                       lt ItemTemplate gt                           lt div class  divRow  gt                               lt div class  divColumn  gt                                   lt div gt                                       lt asp Label ID  lbl1  runat  server  Text  Type Name  CssClass  formLable  gt  lt  asp Label gt                                   lt  div gt                                   lt div gt                                       lt asp TextBox ID  txt type  Width  200  runat  server  CssClass  txtbox  gt  lt  asp TextBox gt                                   lt  div gt                                   lt span gt                                       lt asp RequiredFieldValidator ID  TYPE NAME VAL  runat  server  ControlToValidate  txt type                                          ErrorMessage  Type is required   Display  Dynamic  CssClass  error  gt  lt  asp RequiredFieldValidator gt                                   lt  span gt                               lt  div gt                               lt div class  divColumn  gt                                   lt div gt                                       lt asp Label ID  lbl2  runat  server  Text  Total  CssClass  formLable  gt  lt  asp Label gt                                   lt  div gt                                   lt div gt                                       lt asp TextBox ID  txt total  Width  200  runat  server  CssClass  txtbox  gt  lt  asp TextBox gt                                   lt  div gt                               lt  div gt                           lt  div gt                           lt div class  divRow  gt                               lt div class  divColumn  gt                                   lt div gt                                       lt asp Label ID  lbl3  runat  server  Text  Max  CssClass  formLable  gt  lt  asp Label gt                                   lt  div gt                                   lt div gt                                       lt asp TextBox ID  txt max  Width  200  runat  server  CssClass  txtbox  gt  lt  asp TextBox gt                                   lt  div gt                               lt  div gt                               lt div class  divColumn  gt                                   lt div gt                                       lt asp Label ID  lbl4  runat  server  Text  Min  CssClass  formLable  gt  lt  asp Label gt                                   lt  div gt                                   lt div gt                                       lt asp TextBox ID  txt min  Width  200  runat  server  CssClass  txtbox  gt  lt  asp TextBox gt                                   lt  div gt                               lt  div gt                               lt div class  divColumn  gt                                   lt div gt                                       lt asp Label ID  lbl5  runat  server  Text  Rate  CssClass  formLable  gt  lt  asp Label gt                                   lt  div gt                                   lt div gt                                       lt asp TextBox ID  txt rate  Width  200  runat  server  CssClass  txtbox  gt  lt  asp TextBox gt                                   lt  div gt                               lt  div gt                           lt  div gt                           lt asp Button ID  ButtonAdd  runat  server  Text  Add New Row  OnClick  ButtonAdd Click                              CausesValidation  False    gt                       lt  ItemTemplate gt                   lt  asp TemplateField gt               lt  Columns gt           lt  asp gridview gt   lt  div gt    C  code of ButtonAdd Click    if  ViewState  CurrentTable      null        DataTable dtCurrentTable    DataTable ViewState  CurrentTable        DataRow drCurrentRow   null      if  dtCurrentTable Rows Count  gt  0                for  int i   1  i  lt   dtCurrentTable Rows Count  i                            extract the TextBox values             TextBox box1    TextBox Gridview1 Rows rowIndex  Cells 1  FindControl  txt type                TextBox box2    TextBox Gridview1 Rows rowIndex  Cells 2  FindControl  txt total                TextBox box3    TextBox Gridview1 Rows rowIndex  Cells 3  FindControl  txt max                TextBox box4    TextBox Gridview1 Rows rowIndex  Cells 4  FindControl  txt min                TextBox box5    TextBox Gridview1 Rows rowIndex  Cells 5  FindControl  txt rate                 drCurrentRow   dtCurrentTable NewRow                 dtCurrentTable Rows i - 1   Column1     box1 Text              dtCurrentTable Rows i - 1   Column2     box2 Text              dtCurrentTable Rows i - 1   Column3     box3 Text              dtCurrentTable Rows i - 1   Column4     box4 Text              dtCurrentTable Rows i - 1   Column5     box5 Text               rowIndex                      dtCurrentTable Rows Add drCurrentRow           ViewState  CurrentTable     dtCurrentTable           Gridview1 DataSource   dtCurrentTable          Gridview1 DataBind            else       Response Write  ViewState is null

User · Accepted Answer

It seems that you are trying to get 5 items out of a collection with 5 items  Looking at your code  it seems you re starting at the second value in your collection at position 1  Collections are zero-based  so you should start with the item at index 0  Try this   TextBox box1    TextBox Gridview1 Rows i  Cells 0  FindControl  txt type    TextBox box2    TextBox Gridview1 Rows i  Cells 1  FindControl  txt total    TextBox box3    TextBox Gridview1 Rows i  Cells 2  FindControl  txt max    TextBox box4    TextBox Gridview1 Rows i  Cells 3  FindControl  txt min    TextBox box5    TextBox Gridview1 Rows i  Cells 4  FindControl  txt rate

User · Answer

try this   if  ViewState  CurrentTable      null                                DataTable dtCurrentTable    DataTable ViewState  CurrentTable                    DataRow drCurrentRow   null                  if  dtCurrentTable Rows Count  gt  0                                        for  int i   1  i  lt   dtCurrentTable Rows Count  i                                                    extract the TextBox values                         TextBox box1    TextBox Gridview1 Rows i  Cells 1  FindControl  txt type                            TextBox box2    TextBox Gridview1 Rows i  Cells 2  FindControl  txt total                            TextBox box3    TextBox Gridview1 Rows i  Cells 3  FindControl  txt max                            TextBox box4    TextBox Gridview1 Rows i  Cells 4  FindControl  txt min                            TextBox box5    TextBox Gridview1 Rows i  Cells 5  FindControl  txt rate                             drCurrentRow   dtCurrentTable NewRow                            drCurrentRow  RowNumber     i   1                           dtCurrentTable Rows i - 1   Column1     box1 Text                          dtCurrentTable Rows i - 1   Column2     box2 Text                          dtCurrentTable Rows i - 1   Column3     box3 Text                          dtCurrentTable Rows i - 1   Column4     box4 Text                          dtCurrentTable Rows i - 1   Column5     box5 Text                           rowIndex                                              dtCurrentTable Rows Add drCurrentRow                       ViewState  CurrentTable     dtCurrentTable                       Gridview1 DataSource   dtCurrentTable                      Gridview1 DataBind                                                else                               Response Write  ViewState is null

User · Answer

I was also getting same issue as i tried using value 0 in non-based indexing i e starting with 1  not with zero

[c#] "Specified argument was out of the range of valid values"

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