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Selecting Multiple Items From CheckBoxList RRS feed

  • Question

  • i am trying to get multiple selected items from a asp:CheckBoxList but when i try to compare selected items with some value it says indexing is not allowed. here is the code and Underlined line contained errored code

          // Cat_check is a CheckBoxList in which Multiple items are selected
            for (int i = 0; i < cat_check.Items.Count; i++)
            {
                if (cat_check.SelectedItem != null)
                    {
                        string columnName = cat_check.SelectedItems[i].Text;
                       var column = gvRecoed.Columns.Cast<DataControlField>()
                          .FirstOrDefault(c => c.HeaderText == columnName);
                        if (column != null) column.Visible = true;
                   }
               }

    the idea is that the gvRecoed(GridView) column headers will be matched with CheckBoxList items and only matched columns will be set to visible true..

    Friday, November 29, 2013 6:31 AM

Answers

  • Hi Adil,

    I cannot find the SelectedItems property in the CheckBoxList class properties list. I believe this is the reason of this issue. We can use the following code to instead of your code.

    string columnName = cat_check.Items[i].Text;

    To meet your requirement, I mark some changes on your code like below:

    for (int i = 0; i < cat_check.Items.Count; i++)

                {

                    if (cat_check.Items[i].Selected)

                    {

                        gvRecoed.Columns[i].Visible = true;

                    }

                    else {

                        gvRecoed.Columns[i].Visible = false;

                    }

                }

    And here is the like of the whole project about it.

    http://sdrv.ms/1hselj5.

    By the way, this thread is specific to ASP. NET forum. This form is to discuss problems about CLR development. Please post a new thread on that forum for more effective response. http://forums.asp.net/.

    Regards,


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    Monday, December 2, 2013 5:48 AM
    Moderator