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06.26.2007 at 06:12AM PDT, ID: 22658136
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7.4

"Unable to cast object of type 'System.Data.DataRowView' to type 'System.IConvertible'."

Asked by mathieu_cupryk in C# Programming Language

Tags: , ,

private void cbo_Country_SelectedIndexChanged(object sender, EventArgs e)
        {

            // create an array of provinces
            WebSUtil.StateProvince[] stateprovinceArr;

            // create a new object srvCountryCode
            WebSUtil.SrvUtil srvCountryCode = new WebSUtil.SrvUtil();
           
            if (this.cbo_Country.SelectedIndex != -1)
            {
               
                if (cbo_Province.DataSource != null)
                    ((DataTable)cbo_Province.DataSource).Clear();
         
                // Populate the array of provinces

                stateprovinceArr = srvCountryCode.GetProvinceList(Convert.ToDecimal(this.cbo_Country.SelectedValue));


                if (stateprovinceArr != null)
                {
                    DataTable dt = new DataTable();
                    dt.Columns.Add("name");
                    dt.Columns.Add("id");
                    for (int i = 0; i < stateprovinceArr.Length; i++)
                    {
                        DataRow dr = dt.NewRow();
                        dr["name"] = stateprovinceArr[i].Name;
                        dr["id"] = stateprovinceArr[i].Id.ToString();
                        dt.Rows.Add(dr);
                    }
                    this.cbo_Province.DataSource = dt;
                    this.cbo_Province.DisplayMember = "name";
                    this.cbo_Province.ValueMember = "id";

                }
            }



        }


On the first start on the app it crashes on the first start.  There must be a fix for this.

 stateprovinceArr = srvCountryCode.GetProvinceList(Convert.ToDecimal(this.cbo_Country.SelectedValue));

Unable to cast object of type 'System.Data.DataRowView' to type 'System.IConvertible'.

"Unable to cast object of type 'System.Data.DataRowView' to type 'System.IConvertible'."


I have this in the Load Form:


 private void InitializeDropDownListCountry(WebSUtil.SrvUtil srvCountryCode)
        {
           
              WebSUtil.CountryCode[] countryArr = srvCountryCode.GetCountryList();
              DataTable dt = new DataTable();
              dt.Columns.Add("name");
              dt.Columns.Add("id");
              for (int i = 0; i < countryArr.Length; i++)
              {
                DataRow dr = dt.NewRow();
                dr["name"]=countryArr[i].Name;
                dr["id"]=countryArr[i].Id.ToString();
                dt.Rows.Add(dr);
              }
              this.cbo_Country.DataSource=dt;
              this.cbo_Country.DisplayMember="name";
              this.cbo_Country.ValueMember="id";

           
        }

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About this solution

Zone: C# Programming Language
Tags: cast, object, unable
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Solution Provided By: steelheart38
Participating Experts: 3
Solution Grade: A
 
 
[+][-]06.26.2007 at 10:52AM PDT, ID: 19366131

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