How to loop through multiple cases using foreach and asign values? In C#

I am aware of this syntax but how I can loop through multiple cases and assign the values and error message i have blocked here


public Task<resultmodel> GetTestResults(string infoset){

//getting "resultDataSet" from DB

var table = resultDataSet.Tables[0];

var results = table
.Rows
.Cast<datarow>()
?.Select(x => new ResultModel
{
TestCases = x["TestCases"] as string,
Message = x["ErrorMessage"] as string,
ResultStatus = x["ResultStatus"] as string,
DataKey = x["ValidationKey"] as string,
TestType = x["TestType"] as string
});

// TestCases = array of multiple test cases
// Message =error msg based on case we have to add
// ResultStatus =Passed or Failed in test cases
// DataKey =some key like 4252634343567TSA
// TestType =smoke/unit test

bool isValidKey = await _Ichekkey.IsValidcertificateKey(string key)



int testCasesCount = Convert.ToInt32(table.Rows[0]["TestCases"]);
bool keyFound;
bool alltcPassed;

foreach (var data in results)
{
if (!String.IsNullOrEmpty(data.SyntheticDataKey))
{
keyFound = true;

List<string> FailedTestCases = new List<string>();

if (data.ResultStatus == "Failed")
{
FailedTestCases.Add(data.TestCases);
}

if (FailedTestCases.Count > 0)
{
alltcPassed = false;
}
else
{
// passed
alltcPassed = true;
}
}

// blocked here confused to continue to check and assign the case results and messages

}
return result;
}

didnt get you sir