Gridview selected index changed

Akhter HUssain

when i selecting row from gridview and data getting loading into textbox and dropdownlist,when data get load in dropdown list value getting double to display ....

protected void GVCon_SelectedIndexChanged(object sender, EventArgs e)
{
cno.Text = GVCon.SelectedRow.Cells[1].Text;
txtcontainer.Text = GVCon.SelectedRow.Cells[2].Text;
txtWeight.Text = GVCon.SelectedRow.Cells[3].Text;
txtbaletotal.Text = GVCon.SelectedRow.Cells[5].Text;
//string SesnId = dm.GetData("select Cat_ID from dbo.ConCatagory where Cat_Name='" + GVCon.SelectedRow.Cells[6].Text.Trim() + "'").Rows[0][0].ToString();
//DDLCAT.SelectedValue = SesnId;
DDLCAT.SelectedItem.Text = GVCon.SelectedRow.Cells[6].Text;

DDLCat.selecteditem.text = GVcon.selectedRow.cells[6].Text;

here is screen shot... Goodwill getting double display ....

14 Replies

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Amit Mohanty7y ago
Accepted answer
Clear the selection then assign.
DDLCAT.ClearSelection();
DDLCAT.Items.FindByText(GVCon.SelectedRow.Cells[6].Text).Selected = true;
Amit Kumar7y ago
Hi,
This problem will solve when you use SelectedIndex not SelectedItem.
use ilke this. First get selectedIndex of the dropdown then use below code.
ddlCat.SelectedIndex = intSelectedIndex;
Thanks
Rajanikant Hawaldar7y ago
can be fixed by change combobox style change dropdown style and check
Rajanikant Hawaldar7y ago
check this

Text property Overriding previously selected item text ,check below code i have done sample in winforms you can try this in web application
using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows.Forms;



namespace cmb

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }



        int _selectedIndex;

        string _text;



        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)

        {

            // Called when a new index is selected.

            _selectedIndex = comboBox1.SelectedIndex;

            Display();

        }



        private void comboBox1_TextChanged(object sender, EventArgs e)

        {

            // Called whenever text changes.

            _text = comboBox1.Text;

            Display();

        }



        void Display()

        {

            this.Text = string.Format("Text: {0}; SelectedIndex: {1}",

                _text,

                _selectedIndex);

        }



        private void button1_Click(object sender, EventArgs e)

        {

            comboBox1.Text = "Text property overriding";

        }

    }

}

https://stackoverflow.com/questions/21552789/combobox-text-vs-combobox-selecteditem-vs-combobox-selectvalue
SelectedItem: Gets or sets currently selected item in the ComboBox.

Based on ComboBox.SelectionChangeCommitted

Text: Gets or sets the text associated with this control. (Overrides Control.Text.)

setting the text value will change the current value of the combobox

SelectedValue: Gets or sets the value of the member property specified by the ValueMember property. (Inherited from ListControl.)

Based on ListControl.SelectedValueChanged

This question might be a duplicate of ComboBox SelectedItem vs SelectedValue.

https://stackoverflow.com/questions/2883481/combobox-selecteditem-vs-selectedvalue

https://www.dotnetperls.com/combobox
Akhter HUssain7y ago
Hi Amit...

error is coming
Cannot have multiple items selected in a DropDownList.
Amit Mohanty7y ago
Hey try this
DDLCAT.Items.FindByText(GVCon.SelectedRow.Cells[6].Text).Selected = true;
Akhter HUssain7y ago
hi Amit Mhanty..

bind query is working fine,,,,when i selected row from gridview then this issue is coming....
Akhter HUssain7y ago
Dear Salman Baig

these all dropdown list calling from table ,,there is not any duplicate value...just it happeing when i selected row from gridview view and load cell value value into dropdownlist...
Amit Mohanty7y ago
Check the query that bind the dropdownlist.
Salman Beg7y ago
First check whether item is present or not. If present then don't add again.
Akhter HUssain7y ago
hi
Rajanikant Hawaldar

i did not get you...
Akhter HUssain7y ago
check debug
Salman Beg7y ago
Hey. I think while binding the drop-down only you are getting two Goodwill value. Check that first by putting debugger. You can use DDLCat.selecteditem.value as well. Thanks
Rajanikant Hawaldar7y ago
Check the item before add as below
if (!comboBox.Items.Contains(entry))
comboBox.Items.Add(entry);

Gridview selected index changed

Cannot have multiple items selected in a DropDownList.