Textchanged event not firing on tab for same value entered

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Hi All,

I have set autopostback property true. And on textchanged event I've written some code. When 1st time I enters a value ans press tab then textchanged event is getting fired, but second time when I enters some same value and press tab or just enters tab then TextChenged event is not firing.
Please provide me solution

Here is my code:
.aspx code:

XML

<asp:TextBox ID="txtRegNo2" runat="server" CssClass="txtbox" TabIndex="81"  onBlur="javascript:CheckRegistrationNo(1,3,this)" AutoPostBack="True" ontextchanged="txtRegNo2_TextChanged" ToolTip="R2 must be 1 to 3 characters" MaxLength="3"></asp:TextBox>

C# code:

C#

protected void txtRegNo2_TextChanged(object sender, EventArgs e)
  {
      try
      {
         if ((txtRegNo1.Text != "") && (txtRegNo2.Text != ""))
          {
              pc.LicensePlateOne = txtRegNo1.Text;
              pc.LicensePlateTwo = txtRegNo2.Text;


              DataTable dt = new DataTable();

              dt = hd.GetRTO_Location(pc);

              if (dt.Rows.Count > 0)
              {
                  ddlRegLoc.SelectedValue = dt.Rows[0]["ID"].ToString();
                  ddlRegLoc.Enabled = false;

                  pd.ID = 3;
                  pd.ProductId = Session["ProductId"].ToString();
                  pd.RegLocationId = ddlRegLoc.SelectedValue;

                  DataTable dtZone = new DataTable();
                  dtZone = hd.GetLocationaDetails(pd);
                  if (dt.Rows.Count > 0)
                  {
                      ddlZone.DataTextField = dtZone.Columns["Description"].ToString();
                      ddlZone.DataValueField = dtZone.Columns["ID"].ToString();
                      ddlZone.DataSource = dtZone;
                      ddlZone.DataBind();
                  }
              }
              txtRegNo3.Focus();
          }
          else
          {
              ddlRegLoc.SelectedValue = "0";
              ddlRegLoc.Enabled = true;
          }
      }
      catch (SqlException sqlEx)
      {
          if (sqlEx.Number == -2)
          {
              string error = sqlEx.Message;
              ErrorLogs(error);
              Alert.Show("Timeout occured. Please try later");
          }
      }
      catch (Exception ex)
      {
          string error = ex.Message;
          ErrorLogs(error);
      }
  }

Posted 5-Sep-13 19:57pm

Dipali_Wagh

Updated 5-Sep-13 20:20pm

phil.o

v6

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Comments

phil.o 6-Sep-13 2:23am

If the text does not change, what is the point the execute your method again ?
If some other fields are involved in the process, the you should assign the same method for the TextChanged event of every TextBox involved in the process. This way, everytime a TextBox involved gets its Text property changed, then your method will execute. If nothing has changed, nothing happens.

Dipali_Wagh 6-Sep-13 2:26am

I want to execute it again and again because I've used one more text box and depends on values of both textbox I'm fetching some value from database

Dholakiya Ankit 6-Sep-13 3:31am

use ajax instead will be faster then this

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Mahesh Bailwal · Answer 1 · 2013-09-05T20:04:00

Solution 1

Well this is how it works, text change event only get fired if your text is changed, if you entered “abc” first time and second time you have entered “abc” again then ASP.Net will compare last value with this new value if both are same then text change event will not get fired.

Posted 5-Sep-13 20:04pm

Mahesh Bailwal

Comments

Dipali_Wagh 6-Sep-13 2:06am

so what is the solution for this problem?

Mahesh Bailwal 6-Sep-13 2:21am

Do you need to fire this text change event in every post back even if the value entered last time and this time is same?

Dipali_Wagh 6-Sep-13 2:24am

ya right
I want to fire textchanged event every time

Mahesh Bailwal 6-Sep-13 2:32am

So in that case create a separate function, copy all the content of “txtRegNo2_TextChanged” event inside this function and call this new fumction in every post back. Also delete “txtRegNo2_TextChanged” event.

Dipali_Wagh 6-Sep-13 2:35am

means? I'm not getting it.
How to call it?
can u explain me?
bcoz anyway "txtRegNo2_TextChanged" event fires on every postback

Mahesh Bailwal 6-Sep-13 3:47am

Just forget about txtRegNo2_TextChanged event create new function do whatever you want to do in txtRegNo2_TextChanged event in this new function and call it in every post back.

Let say you have created new function with name CheckTextChange() and copied all the content of txtRegNo2_TextChanged event inside it then using below syntax you can call it in every post back.

if (IsPostBack)
{ {
CheckTextChange();
}

Dipali_Wagh 6-Sep-13 3:55am

u mean on page_load I have to call it?

Mahesh Bailwal 6-Sep-13 4:35am

yes

Dipali_Wagh 6-Sep-13 6:09am

i tried this but it is not calling the method on tab

Mahesh Bailwal 6-Sep-13 6:21am

Did you debug it on page load. why this new function is not getting called.