When we need to filter more than two column, it’s very tough to make CAML query. as an example, our application have more than two drop down (Bind to SharePoint list column) as search criteria then it’s difficult to get CAML query. to make dynamic CAML query please write the following code:
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class Program { public static string CreateCAMLQuery(List < string > parameters, string orAndCondition, bool isIncludeWhereClause) { StringBuilder sb = new StringBuilder(); if (parameters.Count == 0) { AppendEQ(sb, "all"); } int j = 0; for (int i = 0; i < parameters.Count; i++) { if (!string.IsNullOrEmpty(parameters[i].Split(';')[3])) { AppendEQ(sb, parameters[i]); if (i > 0 && j > 0) { sb.Insert(0, "<" + orAndCondition + ">"); sb.Append("</" + orAndCondition + ">"); } j++; } } if (isIncludeWhereClause) { sb.Insert(0, "<Where>"); sb.Append("</Where>"); } return sb.ToString(); } public static void AppendEQ(StringBuilder sb, string value) { string[] field = value.Split(';'); sb.AppendFormat("<{0}>", field[2].ToString()); sb.AppendFormat("<FieldRef Name='{0}'/>", field[0].ToString()); sb.AppendFormat("<Value Type='{0}'>{1}</Value>", field[1].ToString(), field[3].ToString()); sb.AppendFormat("</{0}>", field[2].ToString()); } static void Main(string[] args) { List < string > objColumns = new List < string > (); // here, format is like: "Column name(internal name of column);Column type; Conditional operator; Search string (input by user) objColumns.Add("Title;Text;Eq;" + "abc"); objColumns.Add("FileLeafRef;Text;Eq;" + "PQR"); objColumns.Add("DropDown;Text;Eq;" + "abc"); objColumns.Add("FileLeafRef1;Text;Eq;" + "PQR"); string query = CreateCAMLQuery(objColumns, "And", true); Console.WriteLine(query); Console.Read(); } } |
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