Display SelectedItem.Value from Dropdownlist and Checkboxlist in a Textbox

Question

Solved to add from  dropdownlist,checkboxlist in a textbox multiple


    protected void ButtonAddDataBase_Click(object sender, EventArgs e)
    {
        string dropDownListValue =  DropDownListDataBase.SelectedItem.Value;
         resultValue += " ";

        TextBoxResultDataBaseSkills.Text += Environment.NewLine;
        TextBoxResultDataBaseSkills.Text += dropDownListValue + " - ";




        foreach (ListItem item in CheckBoxListDataBase.Items)
        {
            if (item.Text == "Beginner" && item.Selected)

                TextBoxResultDataBaseSkills.Text += item.Text; 
            else
            {

                if (item.Text == "Medium" && item.Selected)

                    TextBoxResultDataBaseSkills.Text += item.Text;
                else
                {

                    if (item.Text == "Expert" && item.Selected)

                        TextBoxResultDataBaseSkills.Text += item.Text;
                }
            }
        }

    }

Answer 1

You should be doing something like this,

 protected void ButtonAddDataBase_Click(object sender, EventArgs e)
 {
     string textBoxValue = string.empty;

     //check if drop down value isn't null if it isn't then add it to text box
     if(!string.IsNullorEmpty(DropDownListDataBase.SelectedItem.Value.ToString()))
          textBoxValue  = DropDownListDataBase.SelectedItem.Value.ToString();


     //now check which checkbox is checked

     if(chkboxBeginner.Checked == true)
        textBoxValue  += ": " + chkboxBeginner.Text; // or maybe check .title

     else if(chkboxMedium.Checked == true)
        textBoxValue  += ": " + chkboxMedium.Text;

     else if(chkboxExpert.Checked == true)
        textBoxValue  += ": " + chkboxExpert.Text;

     //at end set text of your textbox
     TextBoxResultDataBaseSkills.Text = textBoxValue;
 }

I hand coded this code so there might be some exceptions you should be able to fix, you should also use jQuery to add validations so that only one checkbox is selected all the times and forcing user to select some value in dropdownlist.

you will have to set checkbox's ids and text values in asp.net markup if its happening in asp.net otherwise behind code in createchildcontrols methond.

You might have to add your controls within a Update Panel so that it won't post back and loose selected values.

Here's a question stating how to use update panel in webpart if you don't know already,

UpdatePanel with SharePoint 2010 web part