Not Value put into Kendo Combobox From Database

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jQuery

C#5.0

Kendo

ret.Append("

<select id=\"Modules\"></select>

");
ret.Append("<input type=\"hidden\" name=\"LModule1\" id=\"LModule1\"/>");


string ValuesLevel1 = "";

foreach (DataRow drModule in DtModuleValues.Rows)
{
ValuesLevel1 += "{ \"Value\": \"" + drModule["ID"] + "\", \"Text\": \"" + drModule["title"] + "\"},";
}
ValuesLevel1 = ValuesLevel1.Substring(0, ValuesLevel1.Length - 1);

ret.Append(" var grp = $(\"#Modules\").kendoComboBox({");
ret.Append(" placeholder:\"Select\",");
ret.Append(" dataSource: [");
ret.Append(ValuesLevel1);
ret.Append(" ],");
ret.Append(" dataValueField: \"Value\",");
ret.Append(" dataTextField: \"Text\",");
ret.Append(" filter: \"contains\"");
ret.Append(" }).data(\"kendoComboBox\");");
ret.Append("</script>");