I want to set the Dropdownlist value to defaul(select) on button click.

Question

0.00/5 (No votes)

See more:

Hi i have a dropdownlist in my Application.
What i want is each time when i click on the Reset button it should set to default value(select).

Here is my code for reset.

C#

public void ResetControl()
        {
            DDLContainer.SelectedIndex = 0;
            DDLCountryLoading.SelectedIndex = 0;
            DDLCountryDestination.SelectedIndex = 0;
            //DDLContainer.Items.Insert(0, new ListItem(" --SELECT--", "0"));
           ImageMode.ImageUrl = "~/ShowImageMode.ashx?Mode=A";
        }

Here is my dropdownlist code:

void ddlCountry()
    {
        con.Open();
        cmd = new SqlCommand("select Distinct(mCRY_VCName) from TB_TransCountry", con);
        SqlDataAdapter da = new SqlDataAdapter(cmd);
        DataSet ds = new DataSet();
        da.Fill(ds);
        DDLCountryLoading.DataSource = ds;
        DDLCountryLoading.DataSourceID = String.Empty;
        DDLCountryLoading.DataTextField = "mCRY_VCName";
        DDLCountryLoading.DataValueField = "mCRY_VCName";
        DDLCountryLoading.DataBind();

        DDLCountryLoading.Items.Insert(0, new ListItem(" --SELECT--", "0"));

        DDLCountryDestination.DataSource = ds;
        DDLCountryDestination.DataSourceID = String.Empty;
        DDLCountryDestination.DataTextField = "mCRY_VCName";
        DDLCountryDestination.DataValueField = "mCRY_VCName";
        DDLCountryDestination.DataBind();

        DDLCountryDestination.Items.Insert(0, new ListItem(" --SELECT--", "0"));
        con.Close();


    }
    void ddlContainer()
    {
        con.Open();
        cmd = new SqlCommand("select Distinct(mCNT_VCTypeName) from TB_TransContainerType", con);
        SqlDataAdapter da = new SqlDataAdapter(cmd);
        DataSet ds = new DataSet();
        da.Fill(ds);
        DDLContainer.DataSource = ds;
        DDLContainer.DataSourceID = String.Empty;
        DDLContainer.DataTextField = "mCNT_VCTypeName";
        DDLContainer.DataValueField = "mCNT_VCTypeName";
        DDLContainer.DataBind();

        DDLContainer.Items.Insert(0, new ListItem(" --SELECT--", "0"));


        con.Close();


    }

Can any one please help me to achieve this.

Posted 18-Mar-14 3:15am

Appdev(Icode)

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Tom Marvolo Riddle · Accepted Answer · 2014-03-18T03:23:00

Solution 1

Try this:

C#

public void ResetControl()
        {
  DDLContainer.Items.Insert(00, "Select");
  DDLCountryLoading.Items.Insert(00, "Select");
  DDLCountryDestination.Items.Insert(00, "Select");

            DDLContainer.SelectedIndex = 0;
            DDLCountryLoading.SelectedIndex = 0;
            DDLCountryDestination.SelectedIndex = 0;
           ImageMode.ImageUrl = "~/ShowImageMode.ashx?Mode=A";
        }

Posted 18-Mar-14 3:23am

Tom Marvolo Riddle

Updated 18-Mar-14 3:28am

v2

Comments

[no name] 18-Mar-14 9:29am

I tried this but It is not working.

Tom Marvolo Riddle 19-Mar-14 0:28am

place this code inside reset button click event and make sure the inserted values are not clear.
Put breakpoint and check it

[no name] 19-Mar-14 1:32am

No its not firing instead of that it keeps on inserting Select each time when the button is clicked.

Tom Marvolo Riddle 19-Mar-14 1:54am

which one is not firing?
it keeps on inserting Select each time when the button is clicked

-Try this:

DDLContainer.Items.Clear();
DDLCountryLoading.Items.Clear();
DDLCountryDestination.Items.Clear();

DDLContainer.Items.Insert(00, "Select");
DDLCountryLoading.Items.Insert(00, "Select");
DDLCountryDestination.Items.Insert(00, "Select");

DDLContainer.SelectedIndex = 0;
DDLCountryLoading.SelectedIndex = 0;
DDLCountryDestination.SelectedIndex = 0;
ImageMode.ImageUrl = "~/ShowImageMode.ashx?Mode=A";

[no name] 19-Mar-14 1:59am

It is not setting to Default value(select0 instead of that it keep on adding select to the list on button click.

For Eg:

in my DDlist 1st time i have the values like select,aa,bb and by default it showing select as selected item and think that i have changed the value to aa.so if i click the button it should reset (i.e) it should display the value select. But it is not doing as i want instead of that it showing the last selected item(aa) as default and it inserted select additionally.so after button click i have the values as select,aa,bb,select.

[no name] 19-Mar-14 1:59am

ok i'l try

Appdev(Icode) · Accepted Answer · 2014-03-18T20:18:00

Hi
I just Called the DDL functions.It works as what i want.

Here is my working code

C#

public void ResetControl()
        {
            DDLContainer.Items.Clear();
            DDLCountryLoading.Items.Clear();
            DDLCountryDestination.Items.Clear();
            mobjGenlib.PopulateCountry(DDLCountryDestination);
            mobjGenlib.PopulateCountry(DDLCountryLoading);
            mobjGenlib.PopulateContainerType(DDLContainer);
           ImageMode.ImageUrl = "~/ShowImageMode.ashx?Mode=A";
        }

Thanks for all Who helped me.