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Hi All,

My dynamic control ddl selectindexchanged is not firing. below is my code.

public void LoadControlData(System.Web.UI.WebControls.Table t, bool IsPostBack, params object[] parameters)
            DataTable dt1 = new DataTable();
            DataTable dt2 = new DataTable();
            IReportData reportInputData = new FieldAuditActivityForDistrictsReportData();
            DataSet ds = reportInputData.GetReportInputData();
            if (IsPostBack == true)
                DropDownList ddlTaxType = (DropDownList)t.FindControl("ddlRegionID");
                ddlTaxType.AppendDataBoundItems = true;
                ddlTaxType.Items.Insert(0, "");
                ddlTaxType.SelectedIndex = 0;
                ddlTaxType.DataSource = ds.Tables[0];
                ddlTaxType.DataTextField = "RegionName";
                ddlTaxType.DataValueField = "RegionID";
                _regionID =ddlTaxType.DataValueField;
                //DropDownList ddlAuditors = (DropDownList)t.FindControl("ddlOfficeID");
                //ddlAuditors.AppendDataBoundItems = true;
                //ddlAuditors.Items.Insert(0, "");
                //ddlAuditors.SelectedIndex = 0;
                //ddlAuditors.DataSource = ds.Tables[1];
                //ddlAuditors.DataTextField = "OfficeName";
                //ddlAuditors.DataValueField = "OfficeID";
            _tableHold = t;
            _lbuttoned = (LinkButton)t.FindControl("lbuttonEndDateID");
            _ddlRegion = (DropDownList)t.FindControl("ddlRegionID");
            Calendar cldred = (Calendar)t.FindControl("cldrEndDateID");
            _lbuttoned.Click += new EventHandler(lbuttoned_Click);   
            cldred.SelectionChanged += new EventHandler(cldred_SelectionChanged);
            cldred.VisibleMonthChanged += new MonthChangedEventHandler(cldred_VisibleMonthChanged);
            cldred.Visible = false;
            _ddlRegion.SelectedIndexChanged += new EventHandler(ddlRegion_SelectedIndexChanged);
            //_ddlRegion.SelectedIndexChanged += new EventHandler(ddlRegion_SelectedIndexChanged);

public void ddlRegion_SelectedIndexChanged(object sender, EventArgs e)
            DataRow dr = null;            
            IDataAccess da = DataAccessFactory.Create("ATS");
            List<idbdataparameter> pars = new List<idbdataparameter>();
            IDbDataParameter param1 = new SqlParameter(DataConstants.DataConstants.REGION_ID,_regionID);
            SqlDataReader reader = (SqlDataReader)da.ExecuteReader(ProcedureConstants.FIELD_AUDIT_ACTIVITY_FOR_DISTRICTS_DISTRICTS_INPUT, ref pars, true);
            DataTable dt = new DataTable();
            DataColumn dc1 = new DataColumn("officeid");
            DataColumn dc2 = new DataColumn("officename");

            while (reader.Read())
                dr = dt.NewRow();
                dr[dc1] = reader["officeid"];
                dr[dc2] = reader["officename"];
            DataSet ds = new DataSet();
            //DropDownList ddlTaxType = (DropDownList)t.FindControl("ddlRegionID");
            //ddlTaxType.AppendDataBoundItems = true;
            //ddlTaxType.Items.Insert(0, "");
            //ddlTaxType.SelectedIndex = 0;
            //ddlTaxType.DataSource = ds.Tables[0];
            //ddlTaxType.DataTextField = "RegionName";
            //ddlTaxType.DataValueField = "RegionID";
            //_regionID = ddlTaxType.DataValueField;
do you have any idea.

Thanks in advance

Posted 8-Feb-13 5:26am
Edited 8-Feb-13 5:27am
richcb at 8-Feb-13 11:28am
You will need to post your markup for the ddl as well. Use the "Improve question" widget to add that.
ryanb31 at 8-Feb-13 11:35am
Try setting AutoPostBack to true on your ddl.
Sandeep Mewara at 8-Feb-13 11:45am
1. is Autopostback set to true for ddlRegionID?
2. Why use/define a variable same as keyword and confuse? IsPostback is a defined page property, so use some other variable name in your method.
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Solution 1

set autopostback property to true while creating your dropdown
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Solution 2

Yes thanks guys.

_ddlRegion.AutoPostBack = true;

is the answer. Now it's working fine

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