DataAdapter.Update () doesn't work in Update and Delete Command

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my sql statments are as follows
the insert statement only works
update and delete statements don't work

C#

string deletecmd_PurchaseProduct =
    @"DELETE FROM PurchaseProduct Where" +
    "PurchaseProduct_No=@PurchaseProduct_No and "+
    "Purchase_InvoiceNo=@Purchase_InvoiceNo ";

string updatcmd_PurchaseProduct =
    "UPDATE PurchaseProduct "
+ "  SET    "
+ "  PurchaseProduct_SerialNo =@PurchaseProduct_SerialNo"
+ ", Purchase_InvoiceNo =@Purchase_InvoiceNo"
+ ", ProductNo =@ProductNo"
+ " PurchaseProduct_Quantity =@PurchaseProduct_Quantity "
+ ", PurchaseProduct_Unit =@PurchaseProduct_Unit"
+ ", PurchaseProduct_Price =@PurchaseProduct_Price"
+ " Where "
+ " PurchaseProduct_No=@PurchaseProduct_No";



string insertcmd_PurchaseProduct = "INSERT INTO PurchaseProduct" +
                   "(" +
                   " PurchaseProduct_SerialNo"+
                   ",Purchase_InvoiceNo" +
                   ",ProductNo" +
                   ",PurchaseProduct_Quantity " +
                   ",PurchaseProduct_Price" +
                   ",PurchaseProduct_Unit" +    //6
                   ")" +
                    "Values" +
                   "(" +
                   " @PurchaseProduct_SerialNo"+
                   ",@Purchase_InvoiceNo" +
                   ",@ProductNo " +
                   ",@PurchaseProduct_Quantity " +
                   ",@PurchaseProduct_Price" +
                   ",@PurchaseProduct_Unit" +       //6
                   ");";

Posted 25-Aug-13 17:49pm

deva936

Updated 25-Aug-13 23:39pm

v4

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Comments

ArunRajendra 26-Aug-13 0:17am

How are you calling this statements?

deva936 26-Aug-13 1:24am

sa1.InsertCommand = cmdInsert_PurchaseProduct;
sa1.UpdateCommand = cmdUpdate_PurchaseProduct;
sa1.DeleteCommand = cmdDelete_PurchaseProduct;

sa1.Update(dtPurchaseProduct);

Azziet 26-Aug-13 6:03am

what is the error ,you are getting..

ZurdoDev 26-Aug-13 13:35pm

Just do a SQL trace and see what is happening.

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SaqibRasheed · Answer 1 · 2013-08-26T10:46:00

To use the update and delete query, you should use the ExecuteNonQuery; you can use the following sample code for Update:

SqlDataAdapter adapter = new SqlDataAdapter();
SqlConnection connection = new SqlConnection("Connection string here...");
string sql = "update statement here...";
try
{
connection.Open();
adapter.UpdateCommand = connection.CreateCommand();
adapter.UpdateCommand.CommandText = sql;

adapter.UpdateCommand.ExecuteNonQuery();
MessageBox.Show ("Row updated !! ");
}

you can use the following sample code for Delete:

SqlDataAdapter adapter = new SqlDataAdapter();
SqlConnection connection = new SqlConnection("Connection string here...");
string sql = "delete query here...";
try
{
connection.Open();
adapter.DeleteCommand = connection.CreateCommand();
adapter.DeleteCommand.CommandText = sql;

adapter.DeleteCommand.ExecuteNonQuery();
MessageBox.Show ("Row(s) deleted !! ");
}

I hope it will help you resolve your issue :)