Is there anyway to iterate through a Dapper DynamicParameters object? - dapper

Question

I need to make a generic logger to record certain insert/update statements so that my testers can verify the data being inserted is correct.
My first thought was that I would just use a function that accepted DynamicParameters and I would foreach through the DynamicParameters to generate a string to list the parameter's name and value and make them easier to read for the testers.
Unfortunately, Dapper.DynamicParameters does not contain a public definition for "GetEnumerator"
Here is basic example of what I was hoping to do:
string myFormattedListofParameters = "";
foreach (var p in myDynamicParameters)
{
myFormattedListofParameters += p.Name + "=" + p.Value.ToString();
}

Answer 1

Try:
var sb = new StringBuilder();
foreach (var name in p.ParameterNames)
{
var pValue = p.Get<dynamic>(name);
sb.AppendFormat("{0}={1}\n", name, pValue.ToString());
}

Answer 2

string ParametersToString(DynamicParameters parameters)
{
var result = new StringBuilder();
if (parameters != null)
{
var firstParam = true;
var parametersLookup = (SqlMapper.IParameterLookup)parameters;
foreach (var paramName in parameters.ParameterNames)
{
if (!firstParam)
{
result.Append(", ");
}
firstParam = false;
result.Append('#');
result.Append(paramName);
result.Append(" = ");
try
{
var value = parametersLookup[paramName];// parameters.Get<dynamic>(paramName);
result.Append((value != null) ? value.ToString() : "{null}");
}
catch
{
result.Append("unknown");
}
}
}
return result.ToString();
}

Answer 3

One line with Linq:
string.Join(", ", from pn in sprocParams.ParameterNames select string.Format("#{0}={1}", pn, (sprocParams as SqlMapper.IParameterLookup)[pn]))
I'm using that to log with log4net:
Log.InfoFormat("Exec {0} {1}", storedProc, string.Join(", ", from pn in sprocParams.ParameterNames select string.Format("#{0}={1}", pn, (sprocParams as SqlMapper.IParameterLookup)[pn])));

Answer 4

Just in case,
var pmaster = new Dapper.DynamicParameters();
SortedList l = new SortedList();
l.Add("param1", object1);
l.Add("param2", object2);
l.Add("param3", object3);
l.Add("param4", object4);
foreach(var key in l.Keys)
{
var val = l[key];
pmaster.Add(key.ToString(), val);
}
Worked for me.