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Geopreocessing tool execution error. C# SDKPro

Question asked by on Dec 3, 2018
Latest reply on Dec 10, 2018 by gkmieliauskas_cellexp


I am trying to add and XY event layer through a data table generated from a datagridview in Winform. But when trying to make a string of data table object C# RuntimeBinderException occurs, that string converter has some invalid arguments. the code is mention below;

var st = Geoprocessing.MakeValueString(dT);

When I changed this to string expression,

string st = dT.ToString();

the code throws no exception but tool doesn't execute at all. code for tool execution is also mentioned below.

string st = dT.ToString();

var args = Geoprocessing.MakeValueArray(st, "Long", "Lat", "Settlement_m", "", "Settlement");

string tool_path = "MakeXYEventLayer_management";

System.Threading.CancellationTokenSource cts = new System.Threading.CancellationTokenSource();

var result = Geoprocessing.ExecuteToolAsync(tool_path, args, null, cts.Token, (event_name, o) => // implement delegate and handle events, o is message object


switch (event_name)


case "OnValidate": // stop execute if any warnings

if ((o as IGPMessage[]).Any(it => it.Type == GPMessageType.Warning))



case "OnProgressMessage":

string msg = string.Format("{0}: {1}", new object[] { event_name, (string)o });




case "OnProgressPos":

string msg2 = string.Format("{0}: {1} %", new object[] { event_name, (int)o });





}, GPExecuteToolFlags.AddOutputsToMap|GPExecuteToolFlags.RefreshProjectItems);

var ret = await result;

cts = null;

I cannot give a file path for the XY Table because I am calculating Z-layer in runtime and adding it to the table before making the string of DataTable object. Any help would be appreciated.