update multiple rows using stored procedure with asp.net

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i have two tables called purchasedetails and itemmaster , what I want to do is, once I press submit button need to update the itemmaster table. for these I am using stored procedure.

this is what I write the stored procedure. Its working for one row. in my web page am using gridview. how to work it out , please help me.

ALTER PROCEDURE [dbo].[UpdateItem]
@ItemCode NVARCHAR(20),
@CurrentQuantity int = 0,
@WholesalePrice int = 0

AS
BEGIN
UPDATE ItemMaster SET CurrentQuantity = @CurrentQuantity + (SELECT CurrentQuantity

FROM
ItemMaster WHERE ItemCode=@ItemCode) , WholesalePrice=@WholesalePrice WHERE ItemCode = @ItemCode

END

this is my asp code.

try
{

foreach (GridViewRow gr in grvList.Rows)
{

objItemMaster.ItemCode = ((Label)gr.FindControl("txtItemCode")).Text;
objItemMaster.CurrentQuantity = Convert.ToDecimal(((TextBox)gr.FindControl("txtUnit")).Text);
objItemMaster.WholesalePrice = Convert.ToDecimal(((TextBox)gr.FindControl("txtPrice")).Text);
objItemMaster.ModifiedBy = Session["admin"].ToString();
objItemMaster.ModifiedDate = DateTime.Now;

}
objItemDb.UpdateItem(txtItemCode.Text);
}
catch
{

}

-----------------------------------------------------------------------

public bool UpdateItem(string PID)

{
try
{
strSql = "EXEC UpdateItem '" + PID + "'";
return objDB.ExecuteNonQuerySQL(strSql);
}
catch (Exception ex)`enter code here`
{
objDB.LogError(ex.ToString());
return false;
}
}

------------------------------------------------------------------

its not giving error or not giving any result even...

Posted 1-Oct-14 23:11pm

tastini

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Fadi Chamieh · Accepted Answer · 2014-10-01T23:22:00

You need to make the update inside the loop, and then actually perform the update with the item code, quantity/price from the grid. Like:

C#

foreach (GridViewRow gr in grvList.Rows)
{
   objItemMaster.ItemCode = ((Label)gr.FindControl("txtItemCode")).Text;
   objItemMaster.CurrentQuantity = Convert.ToDecimal(((TextBox)gr.FindControl("txtUnit")).Text);
   objItemMaster.WholesalePrice = Convert.ToDecimal(((TextBox)gr.FindControl("txtPrice")).Text);
   objItemMaster.ModifiedBy = Session["admin"].ToString();
   objItemMaster.ModifiedDate = DateTime.Now;
   
   objItemDb.UpdateItem(objItemMaster.ItemCode, objItemMaster.CurrentQuantity, objItemMaster.WholesalePrice); 
}

Where the update item function is something like:

C#

public bool UpdateItem(string itemCode, decimal quantity, decimal price)
{
  try
  {
    strSql = "EXEC UpdateItem '" + PID + "', " + quantity + ", " + price;
    return objDB.ExecuteNonQuerySQL(strSql);
  }
  catch (Exception ex)`enter code here`
  {
    objDB.LogError(ex.ToString());
    return false;
  }
}

That should make it work :)