I checked my code over and over. But i cant seem to find where this error occurs.
Here is my code:
public static string MerchantUpdate(string firstN, string lastN, int type, int reseller, string CoName, string site, int industry, bool isact, bool isdel, string houseNO, string street, string town, string city, string state, string zipcode, int countryID, string telephone, string fax, string userN, string emailA, string secQ, string secA, decimal set, decimal month, decimal dep, decimal with, decimal eTrans, decimal acct, DateTime created)
{
string retmerUpdate = "";
string merUpdate = "UPDATE MerchantMaster SET FirstName = #fname, LastName = #lname, MerchantTypeID = #typeID, ResellerMasterID = #resellerID, "
+ "CompanyName = #CoName, Url = #url, IndustryID = #IndustryID, IsActive = #isact, IsDeleted = #isdel, HouseNo = hnumber, "
+ "StreetAddress = #address, Town = #townAD, City = #cityAD, State = #stateAD, ZipCode = #zipC, CountryID = #countryID, "
+ "TelephoneNo = #teleNo, FaxNo = #faxNo, UserName = #uName, EmailAdr = #eAD, SecurityQ = #secQ, SecurityA = #secA, Setup = #set, "
+ "Monthly = #month, Deposit = #dep, Withdraw = #with, EmailTransfer = #eTrans, AccTransfer = #acct, DateCreated = #created WHERE id = #id";
string[] param = { "#fname", "#lname", "#typeID", "#resellerID", "#CoName", "#url", "#IndustryID", "#isact", "#isdel", "#hnumber", "#address", "#townAD", "#cityAD", "#stateAD", "#zipC", "#countryID", "#teleNo", "#faxNo", "#uName", "#eAD", "#secQ", "#secA", "#set", "#month", "#dep", "#with", "#eTrans", "#acct", "#created" };
object[] paramVal = { firstN, lastN, type, reseller, CoName, site, industry, isact, isdel, houseNO, street, town, city, state, zipcode, countryID, telephone, fax, userN, emailA, secQ, secA, set, month, dep, with, eTrans, acct, created};
try
{
ClassDBQuery.ExecNonQuery(merUpdate, param, paramVal);
retmerUpdate = "success";
}
catch (Exception ex)
{
retmerUpdate = ex.Message;
}
return retmerUpdate;
}
Here is my code behind:
using (SqlConnection connectString = new SqlConnection(GetConnectString()))
//update merchant master
try
{
int idses = Convert.ToInt32(Session["ID"].ToString());
string merUpdate = ClassMerchant.MerchantUpdate(fName.Text, lName.Text, Convert.ToInt32(ddlT.SelectedValue), Convert.ToInt32(ddlR.SelectedValue), CompName.Text, website.Text, Convert.ToInt32(ddlI.SelectedValue), true, false, houseN.Text, streetAD.Text, townAD.Text, cityAD.Text, stateAD.Text, zipC.Text, Convert.ToInt32(ddlC.SelectedValue), teleNumb.Text, faxNumb.Text, userN.Text, Eaddress.Text, secQuest.Text, secAns.Text, Convert.ToDecimal(set.Text), Convert.ToDecimal(month.Text), Convert.ToDecimal(dep.Text), Convert.ToDecimal(with.Text), Convert.ToDecimal(etrans.Text), Convert.ToDecimal(aTrans.Text), DateTime.Now);
}
catch (Exception ex)
{
lblMessage.Text = ex.Message;
}
finally
{
if (connectString.State == System.Data.ConnectionState.Open)
connectString.Close();
}
Please help me.
hnumber is missing # in front of it
Related
First of all, I found this link which was a HUGE help to get this working.
https://medium.com/#benwmills/using-the-netsuite-suitetalk-api-with-net-core-net-standard-40f1a4464da1
But wanted to post my findings - in case it helps anyone else.
Step 1: Add a Service Reference to your project (WCF Web Service)
Step 2: Create NetSuitePortTypeClient and Open it (use your own account specific)
NetSuitePortTypeClient nsptc = new NetSuitePortTypeClient(NetSuitePortTypeClient.EndpointConfiguration.NetSuitePort, "https://########.suitetalk.api.netsuite.com/services/NetSuitePort_2021_2");
await nsptc.OpenAsync();
Step 3: Create a Transaction Search in this example
TransactionSearch tranSearch = new TransactionSearch();
TransactionSearchBasic tranSearchBasic = new TransactionSearchBasic();
SearchStringField searchstringfield = new SearchStringField();
searchstringfield.#operator = SearchStringFieldOperator.#is;
searchstringfield.operatorSpecified = true;
searchstringfield.searchValue = "$$$$$$";
tranSearchBasic.tranId = searchstringfield;
tranSearch.basic = tranSearchBasic;
Step 4: Call the Search
searchResponse sresponse = await nsptc.searchAsync(CreateTokenPassport(), null, null, null, tranSearch);
AND Here is the CreateTokenPassword function
public TokenPassport CreateTokenPassport()
{
string account = "account";
string consumerKey = "ckey";
string consumerSecret = "csecret";
string tokenId = "token";
string tokenSecret = "tokensecret";
string nonce = ComputeNonce();
long timestamp = ComputeTimestamp();
TokenPassportSignature signature = ComputeSignature(account, consumerKey, consumerSecret, tokenId, tokenSecret, nonce, timestamp);
TokenPassport tokenPassport = new TokenPassport();
tokenPassport.account = account;
tokenPassport.consumerKey = consumerKey;
tokenPassport.token = tokenId;
tokenPassport.nonce = nonce;
tokenPassport.timestamp = timestamp;
tokenPassport.signature = signature;
return tokenPassport;
}
You've left out the ComputeNonce, ComputeTimestamp, ComputeSignature functions so this code doesn't work...
Here is full code from example of calling NetSuite SOAP using C#:
public TokenPassport CreateTokenPassport()
{
string account = DataCollection["login.acct"];
string consumerKey = DataCollection["login.tbaConsumerKey"];
string consumerSecret = DataCollection["login.tbaConsumerSecret"];
string tokenId = DataCollection["login.tbaTokenId"];
string tokenSecret = DataCollection["login.tbaTokenSecret"];
string nonce = ComputeNonce();
long timestamp = ComputeTimestamp();
TokenPassportSignature signature = ComputeSignature(account, consumerKey, consumerSecret, tokenId, tokenSecret, nonce, timestamp);
TokenPassport tokenPassport = new TokenPassport();
tokenPassport.account = account;
tokenPassport.consumerKey = consumerKey;
tokenPassport.token = tokenId;
tokenPassport.nonce = nonce;
tokenPassport.timestamp = timestamp;
tokenPassport.signature = signature;
return tokenPassport;
}
private string ComputeNonce()
{
RNGCryptoServiceProvider rng = new RNGCryptoServiceProvider();
byte[] data = new byte[20];
rng.GetBytes(data);
int value = Math.Abs(BitConverter.ToInt32(data, 0));
return value.ToString();
}
private long ComputeTimestamp()
{
return ((long) (DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1))).TotalSeconds);
}
private TokenPassportSignature ComputeSignature(string compId, string consumerKey, string consumerSecret,
string tokenId, string tokenSecret, string nonce, long timestamp)
{
string baseString = compId + "&" + consumerKey + "&" + tokenId + "&" + nonce + "&" + timestamp;
string key = consumerSecret + "&" + tokenSecret;
string signature = "";
var encoding = new System.Text.ASCIIEncoding();
byte[] keyBytes = encoding.GetBytes(key);
byte[] baseStringBytes = encoding.GetBytes(baseString);
using (var hmacSha1 = new HMACSHA1(keyBytes))
{
byte[] hashBaseString = hmacSha1.ComputeHash(baseStringBytes);
signature = Convert.ToBase64String(hashBaseString);
}
TokenPassportSignature sign = new TokenPassportSignature();
sign.algorithm = "HMAC-SHA1";
sign.Value = signature;
return sign;
}
I have this ASP.NET project working with Oracle, I have the following code for operating the DB:
public int cmd_Execute_Orcl(string strSql, params OracleParameter[] paramArray)
{
OracleCommand myCmd = new OracleCommand();
try
{
myCmd.Connection = myOrclConn;
myCmd.CommandText = strSql;
foreach (OracleParameter temp in paramArray)
{
myCmd.Parameters.Add(temp);
}
ConnectionManage(true);
int i = myCmd.ExecuteNonQuery();
myCmd.Parameters.Clear();
return i;
}
catch (Exception ex)
{
throw (ex);
}
finally
{
myCmd.Dispose();
ConnectionManage(false);
}
}
"ConnectionManage()" turns on or off the connection, the following code is from data access layer of the program:
public string Edit_DAL(string id, string jh, string jz, string jd, string wd, string gzwz, string qxlx, string sx, string jx, string jb, string cfdd, string zjqssj, string zjzzsj, string bz)
{
string sql = "update JH set jh = :jh, jz = :jz, wd = :wd, jd = :jd, gzwz = :gzwz, qxlx = :qxlx, sx = :sx, jx = :jx, jb = :jb, cfdd = :cfdd, zjqssj = TO_DATE(:zjqssj, 'yyyy-mm-dd hh24:mi:ss'), zjzzsj = TO_DATE(:zjzzsj, 'yyyy-mm-dd hh24:mi:ss'), bz = :bz where ID = :idy";
string result = null;
{
String[] temp1 = zjqssj.Split('/');
String[] temp2 = zjzzsj.Split('/');
string tempString = "";
if (temp1[2].Length < 2)
{
temp1[2] = temp1[2].Insert(0, "0");
}
for (int i = 0; i < temp1.Length; i++)
{
if (i != 0)
{
temp1[i] = temp1[i].Insert(0, "/");
}
tempString += temp1[i].ToString();
}
zjqssj = tempString;
tempString = "";
if (temp2[2].Length < 2)
{
temp2[2] = temp2[2].Insert(0, "0");
}
for (int i = 0; i < temp2.Length; i++)
{
if (i != 0)
{
temp2[i] = temp2[i].Insert(0, "/");
}
tempString += temp2[i].ToString();
}
zjzzsj = tempString;
tempString = "";
}
OracleParameter[] pars ={
new OracleParameter(":idy",id),
new OracleParameter(":jh",jh),
new OracleParameter(":jz",jz),
new OracleParameter(":jd",jd),
new OracleParameter(":wd",wd),
new OracleParameter(":gzwz",gzwz),
new OracleParameter(":qxlx",qxlx),
new OracleParameter(":sx",sx),
new OracleParameter(":jx",jx),
new OracleParameter(":jb",jb),
new OracleParameter(":cfdd",cfdd),
new OracleParameter(":zjqssj",(zjqssj.Replace('/', '-') + " 00:00:00")),
new OracleParameter(":zjzzsj",(zjzzsj.Replace('/', '-') + " 00:00:00")),
new OracleParameter(":bz",bz)
};
try
{
SqlHelper.cmd_Execute_Orcl(sql, pars);
result = "ok";
}
catch (Exception ex)
{
result = "no" + "=" + ex.Message + "\n" + ex.StackTrace;
}
return result;
}
Here's where the strange thing happens, when I hit this part of the code, there's no exception, it returns 0, no rows affected, all the values of the parameters are normal, with expected value, then I tried to run the command in PL/SQL and it works, the row is correctly updated, delete function is also referencing the same "cmd_Execute_Orcl" method and it works just fine, and for the other object the edit function is working perfectly, I am posting the code below:
public string Edit(string OriginalId, string EditUserAccount, string EditUserName, string EditUserMobile, string EditDeptId, string EditRoleId, string EditRoleName)
{
string sql = "update AuthUser set UserAccount=:EditUserAccount, UserName=:EditUserName, UserMobile=:EditUserMobile, DepartmentId=:EditDeptId, RID=:EditRoleId, RoleName=:EditRoleName where ID=:OriginalId";
OracleParameter[] pars ={
new OracleParameter(":EditUserAccount",EditUserAccount),
new OracleParameter(":EditUserName",EditUserName),
new OracleParameter(":EditUserMobile",EditUserMobile),
new OracleParameter(":EditDeptId",EditDeptId),
new OracleParameter(":EditRoleId",EditRoleId),
new OracleParameter(":EditRoleName",EditRoleName),
new OracleParameter(":OriginalId",OriginalId),
};
try
{
SqlHelper.cmd_Execute_Orcl(sql, pars);
return "ok";
}
catch (Exception ex)
{
string test = ex.Message;
return "no";
}
}
In the expected table, column ID is nvarchar2 with default value of sys_guid(), column ZJQSSJ and column ZJZZSJ is of type date, all other columns are of type varchar2, I have also tried executing "COMMIT" and reformating data for date, but the same problem is still there, plz help...
I have a task to upload the excel file and also check update if the same record found, I have uploaded the excel file in the database which is working fine.
Now, I have to check if the same records inserted then update otherwise insert the new records, I have two table first I am inserting the records in the temp table then after that I am checking the temp table with the original table , if records matches then update else insert, I am using nested for loop to check the records
my loop works fine and insert the top two records, but when it comes to the 3rd record then insert it multiple times and on 4th again multiple times,Kindly guide me what i am doing wrong
here is my code so far
protected void btnUpload_Click(object sender, EventArgs e)
{
try
{
int id;
string contactPerson;
string designation;
string company;
string contact;
string emailaddress;
string city;
string region;
string industry;
string division;
string mobile;
string address;
string path = Path.GetFileName(FileUpload1.FileName);
path = path.Replace(" ", "");
FileUpload1.SaveAs(Server.MapPath("~/uploadExcel/") + FileUpload1.FileName);
String ExcelPath = Server.MapPath("~/uploadExcel/") + FileUpload1.FileName;
OleDbConnection mycon = new OleDbConnection("Provider = Microsoft.ACE.OLEDB.12.0; Data Source = " + ExcelPath + "; Extended Properties=Excel 8.0; Persist Security Info = False");
mycon.Open();
DeleteRecords();
OleDbCommand cmd = new OleDbCommand("select * from [Sheet1$]", mycon);
OleDbDataReader dr = cmd.ExecuteReader();
while (dr.Read())
{
if (dr[0].ToString() != "")
{
// Response.Write("<br/>"+dr[0].ToString());
id = Convert.ToInt32(dr[0].ToString());
contactPerson = dr[1].ToString();
designation = dr[2].ToString();
company = dr[3].ToString();
emailaddress = dr[4].ToString();
contact = dr[5].ToString();
mobile = dr[6].ToString();
address = dr[7].ToString();
city = dr[8].ToString();
region = dr[9].ToString();
industry = dr[10].ToString();
division = dr[11].ToString();
InsertTemp(id, contactPerson, designation, company, emailaddress, contact,
mobile, address, city, region, industry, division);
//InsertOrignal(id, contactPerson, designation, company, emailaddress, contact,
// mobile, address, city, region, industry, division);
}
else
{
break;
}
String myconn = "Data Source=Ali-PC;Initial Catalog=MushkhoApp;Integrated Security=True";
SqlConnection conn = new SqlConnection(myconn);
conn.Open();
DataTable dt_temp = new DataTable();
DataTable dt_orignal = new DataTable();
SqlDataAdapter da_temp = new SqlDataAdapter("select * from Tbl_ExcelData order by id asc", conn);
SqlDataAdapter da_orignal = new SqlDataAdapter("select * from Tbl_ExcelUploadData order by id asc", conn);
da_temp.Fill(dt_temp);
da_orignal.Fill(dt_orignal);
if (dt_orignal.Rows.Count > 0)
{
for (int i = 0; i < dt_temp.Rows.Count; i++)
{
for (int j = 0; j < dt_orignal.Rows.Count; j++)
{
if (dt_temp.Rows[i]["email"].ToString() == dt_orignal.Rows[j]["email"].ToString())
{
//Update Record if required
}
else
{
//insert record into orignal table
InsertOrignal(id, contactPerson, designation, company, emailaddress, contact, mobile, address, city, region, industry, division);
}
}
}
}
else
{
InsertOrignal(id, contactPerson, designation, company, emailaddress, contact, mobile, address, city, region, industry, division);
}
}
lblmessage.Text = "Data Has Been Updated Successfully";
mycon.Close();
File.Delete(ExcelPath);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
private void InsertTemp(int id, String contactPerson, String designation, String company, String emailaddress,
String contact, String mobile, String address,String city,String region,String industry,
String division)
{
//String mycon = "Data Source=Ali-PC;Initial Catalog=MushkhoApp;Integrated Security=True";
SqlConnection con = new SqlConnection(mycon);
con.Open();
string query = "insert into Tbl_ExcelData (id,contactperson,designation,company,email,contact,mobile,address,city,region,industry,division) values('" + id + "','" + contactPerson + "', '" + designation + "','" + company + "','" + emailaddress + "','" + contact + "','" + mobile + "','" + address + "','" + city + "','" + region + "','" + industry + "','" + division + "')";
SqlCommand cmd = new SqlCommand();
cmd.CommandText = query;
cmd.Connection = con;
cmd.ExecuteNonQuery();
}
private void InsertOrignal(int id, String contactPerson, String designation, String company, String emailaddress,
String contact, String mobile, String address, String city, String region, String industry,
String division)
{
//String mycon = "Data Source=Ali-PC;Initial Catalog=MushkhoApp;Integrated Security=True";
SqlConnection con = new SqlConnection(mycon);
con.Open();
string query = "insert into Tbl_ExcelUploadData (id,contactperson,designation,company,email,contact,mobile,address,city,region,industry,division) values('" + id + "','" + contactPerson + "', '" + designation + "','" + company + "','" + emailaddress + "','" + contact + "','" + mobile + "','" + address + "','" + city + "','" + region + "','" + industry + "','" + division + "')";
SqlCommand cmd = new SqlCommand();
cmd.CommandText = query;
cmd.Connection = con;
cmd.ExecuteNonQuery();
}
private void DeleteRecords()
{
SqlConnection con = new SqlConnection(mycon);
con.Open();
string query = "Delete from Tbl_ExcelData";
SqlCommand cmd = new SqlCommand();
cmd.CommandText = query;
cmd.Connection = con;
cmd.ExecuteNonQuery();
}
}
If you have the Temporary table just to check if the row exists in an Original table, then it is not a good practice.
Directly check if the row exists in your original table with the Primary key id or any Unique Key and then decide whether to Insert or Update.
One way to do this,
while (dr.Read())
{
if (dr[0].ToString() != "")
{
id = Convert.ToInt32(dr[0].ToString()); //add other columns which needs to be fetched from Excel
string query = "select count(1) from Tbl_ExcelData where id=?"; //To check if the row already exsits
SqlCommand cmd = new SqlCommand(con);
cmd.CommandText = query;
cmd.Paramaters.Add(new SqlParameter(1, id));
int count = (Int32) cmd.ExecuteScalar();
if (count > 0) //which means row already exists
{
//Your update code goes here
}
else
{
InsertOrignal(id, contactPerson, designation, company, emailaddress, contact, mobile, address, city, region, industry, division);
}
}
After comments, here is a basic idea. One way you can load your excel data into DataTable and loop through it and decide for Upsert. Remember to learn about MultipleActiveResultSets
try
{
string ExcelPath = Server.MapPath("~/uploadExcel/") + FileUpload1.FileName;
string _oleDBConnectionString = string.Format("Provider = Microsoft.ACE.OLEDB.12.0; Data Source = {0}; Extended Properties=Excel 8.0; Persist Security Info = False", ExcelPath);
string _sqlConnectionString = "Data Source=Ali-PC;Initial Catalog=MushkhoApp;Integrated Security=True; MultipleActiveResultSets=true;"; //enable MultipleActiveResultSets as you'll be opening a nested SqlConnection
string _excelQuery = "select * from [Sheet1$]";
DataTable tempDataTable = null;
using (var conn = new OleDbConnection(_oleDBConnectionString)) //This code loads your excel data into data table
{
conn.Open();
using (var cmd = new OleDbCommand(_excelQuery, conn))
{
using (var reader = cmd.ExecuteReader())
{
var dt = new DataTable();
dt.Load(reader); //this will load your excel data into DataTable
tempDataTable = dt;
}
}
}
using(var sqlConn = new SqlConnection(_sqlConnectionString)) //this code will connect to sql db and upsert based on the id from the excel
{
sqlConn.Open();
string countQuery = "select count(1) from Tbl_ExcelData where id=:id";
using(var cmd = new SqlCommand(countQuery, sqlConn))
{
var param = new SqlParameter("#id");
foreach (DataRow row in tempDataTable.Rows) //this will loop through the DataTable rows, the actual rows from Excel which are loaded into DataTable
{
var id = row["id"]; //get the id column from the excel
var contactPerson = row["contactPerson"]; //get the contactPerson column from the excel
cmd.Paramaters["#id"] = id;
int count = (int) cmd.ExecuteScalar();
if (count) //row already exist in original table
{
//update the row in original table
}
else
{
//insert the row in original table
InsertOriginal(sqlConn, id, contactPerson);
}
}
}
}
}
catch(Exception ex)
{
}
function InsertOriginal(SqlConnection conn, int id, string contactPerson)
{
string insertQuery = "insert into Tbl_ExcelUploadData (id,contactpersonn) values('#id','#contactPerson');
using(var cmd = new SqlCommand(insertQuery, conn))
{
cmd.Parameters.Add(new SqlParameter("#id",id));
cmd.Parameters.Add(new SqlParameter("#contactPerson", contactPerson));
cmd.ExecuteNonQuery();
}
}
Also, this is not a tested code. Feel free to comment back.
I am working on several rawQueries to use to parse data from a table in Android. The below code works fine and returns the lowest rowid in the table.
public void firstRecord(View v){
Cursor c = db.rawQuery("SELECT * FROM surveyDB WHERE rowid = (SELECT MIN(rowid) FROM surveyDB)",null);
c.moveToFirst();
szList.add(c.getString(0));
Toast.makeText(getApplicationContext(), "Sucessful Event. szRowid is: " +szList +".", Toast.LENGTH_LONG).show();
}
I have two questions, and they are both extremely basic: 1) what is the best way to expand the above code to create language to capture the contents of other columns in this table at that specific rowid, (rowid, sampler, species, place), and display this in my application? Something like this perhaps:
((EditText)findViewById(R.id.edSpecies)).setText("");
with the proper reference replacing "" in .setText()?
String TABLE_SURVEY = "surveyDB";
String COL_ROW_ID = "rowid";
String COL_SAMPLER = "sampler";
String COL_SPECIES = "species";
String COL_PLACE = "place";
public ArrayList<SurveyRecord> getSurveyRecords()
{
ArrayList<SurveyRecord> records = new ArrayList<SurveyRecord>();
String query = "SELECT * FROM " + TABLE_SURVEY;
query += " WHERE " + COL_ROW_ID = " SELECT MIN ("
query += COL_ROW_ID + ") FROM " + TABLE_SURVEY;
Cursor c = db.rawQuery(query,null);
if(Cursor.moveToFirst())
{
do{
String sampler = c.getString(cursor.getColumnIndex(COL_SAMPLER));
String species= c.getString(cursor.getColumnIndex(COL_SPECIES));
String place = c.getString(cursor.getColumnIndex(COL_PLACE));
String rowId = c.getString(cursor.getColumnIndex(COL_ROW_ID));
records.add(new (rowId,species,place,sampler));
}while(c.moveToNext())
}
c.close();
}
public class SurveyRecord{
String mRowId;
String mSpecies;
String mPlace;
String mSampler;
public SurveyRecord(String rowId,String species,String place,String sampler)
{
this.mRowId = rowId;
this.mSpecies = species;
this.mPlace = place;
this.mSampler = sampler;
}
}
//Goes to the first record in the dataset
public void firstRecord(View v){
Cursor c = db.rawQuery("SELECT * FROM surveyDB WHERE rowid = (SELECT MIN(rowid) FROM surveyDB)",null);
c.moveToFirst();
((EditText)findViewById(R.id.edRowid))
.setText(c.getString(0));
((EditText)findViewById(R.id.edSpecies))
.setText(c.getString(1));
((EditText)findViewById(R.id.edArea))
.setText(c.getString(2));
((EditText)findViewById(R.id.edSampler))
.setText(c.getString(3));
}
string companyName="ABC";
var query = from q in context.Company where q.CompanyName == companyName select q;
Is there any way to replace the q.CompanyName part of the query with a string variable
so that the field used for filtering be a parametric?
I tried
string str1 = "companySize";
string str2 = "q." + str1;
string companySize = "Mid";
var query = from q in context.Company where str2 == companySize select q;
Didn't work.
Been trying to let the user choose the columns for the query.
Read more about both below option at : Dynamic query with Linq
you can use one of this
Use Dynamic LINQ library
Example for the the blog below
string strWhere = string.Empty;
string strOrderBy = string.Empty;
if (!string.IsNullOrEmpty(txtAddress.Text))
strWhere = "Address.StartsWith(\"" + txtAddress.Text + "\")";
if (!string.IsNullOrEmpty(txtEmpId.Text))
{
if(!string.IsNullOrEmpty(strWhere ))
strWhere = " And ";
strWhere = "Id = " + txtEmpId.Text;
}
if (!string.IsNullOrEmpty(txtDesc.Text))
{
if (!string.IsNullOrEmpty(strWhere))
strWhere = " And ";
strWhere = "Desc.StartsWith(\"" + txtDesc.Text + "\")";
}
if (!string.IsNullOrEmpty(txtName.Text))
{
if (!string.IsNullOrEmpty(strWhere))
strWhere = " And ";
strWhere = "Name.StartsWith(\"" + txtName.Text + "\")";
}
EmployeeDataContext edb = new EmployeeDataContext();
var emp = edb.Employees.Where(strWhere);
Predicate Builder
EXample
var predicate = PredicateBuilder.True<employee>();
if(!string.IsNullOrEmpty(txtAddress.Text))
predicate = predicate.And(e1 => e1.Address.Contains(txtAddress.Text));
if (!string.IsNullOrEmpty(txtEmpId.Text))
predicate = predicate.And(e1 => e1.Id == Convert.ToInt32(txtEmpId.Text));
if (!string.IsNullOrEmpty(txtDesc.Text))
predicate = predicate.And(e1 => e1.Desc.Contains(txtDesc.Text));
if (!string.IsNullOrEmpty(txtName.Text))
predicate = predicate.And(e1 => e1.Name.Contains(txtName.Text));
EmployeeDataContext edb= new EmployeeDataContext();
var emp = edb.Employees.Where(predicate);
If you don't want to use libraries like dynamicLINQ, you can just create the Expression Tree by yourself:
string str1 = "companySize";
string str2 = "q." + str1;
string companySize = "Mid";
var param = Expression.Parameter(typeof(string));
var exp = Expression.Lambda<Func<Company, bool>>(
Expression.Equal(
Expression.Property(param, str1),
Expression.Constant(companySize)),
param);
var query = context.Company.Where(exp);
I think the best way to do this is with built in libraries (and PropertyDescriptor type).
using System.ComponentModel;
void Main()
{
Test test = new Test();
test.CompanyName = "ABC";
object z = TypeDescriptor.GetProperties(test).OfType<PropertyDescriptor>()
.Where(x => x.Name == "CompanyName").Select(x => x.GetValue(test)).FirstOrDefault();
Console.WriteLine(z.ToString());
}
public class Test
{
public string CompanyName { get; set; }
}