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POHow to update a record in a Gridview
 

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  1. POHow to update a record in a Gridview
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    <p>When I try to update a record in a <code>GridView</code>, the following code doesn't update the record, but it doesn't throw any errors either.</p> <pre><code> protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e) { string index = GridView1.Rows[e.RowIndex].Cells[1].Text; //DwgRegID SqlConnection con = new SqlConnection("Data Source=MEHDI-PC\\SQLEXPRESS;Initial Catalog=PIMS;Integrated Security=True"); using (SqlCommand cmd = new SqlCommand()) { string sql = "UPDATE dbo.Dwg_Register SET Ref = @Ref, Dwg_Ref = @Dwg_Ref,Title = @Title, Dwg_Received_Date = @Dwg_Received_Date, Rev = @Rev, Trade = @Trade, type1=@type1,Produced_Date=@Produced_Date,Produced_By=@Produced_By,Submittal_Ref=@Submittal_Ref,Issued_To=@Issued_To,Date_Issued = Date_Issued, Purpose = @Purpose, status1=@status1,Action_Date=@Action_Date where DwgRegID=N'" + index + "'"; cmd.Connection = con; con.Open(); cmd.CommandText = sql; cmd.Parameters.Add(new SqlParameter("@Ref", txtRef.Text)); cmd.Parameters.Add(new SqlParameter("@Dwg_Ref", txtDwgRef.Text)); cmd.Parameters.Add(new SqlParameter("@Title", txtTitle.Text)); cmd.Parameters.Add(new SqlParameter("@Dwg_Received_Date", txtDwgReceivedDate.Text == "" ? DBNull.Value : (object)txtDwgReceivedDate.Text)); cmd.Parameters.Add(new SqlParameter("@Rev", txtRev.Text)); cmd.Parameters.Add(new SqlParameter("@Trade", ddlTrade.Text)); cmd.Parameters.Add(new SqlParameter("@type1", ddlType.Text)); cmd.Parameters.Add(new SqlParameter("@Produced_Date", txtProducedDate.Text == "" ? DBNull.Value : (object)txtProducedDate.Text)); cmd.Parameters.Add(new SqlParameter("@Produced_By", ddlProducedBy.Text)); cmd.Parameters.Add(new SqlParameter("@Submittal_Ref", txtSubmittalRef.Text)); cmd.Parameters.Add(new SqlParameter("@Issued_To", ddlIssuedTo.Text)); cmd.Parameters.Add(new SqlParameter("@Date_Issued", txtDateIssued.Text == "" ? DBNull.Value : (object)txtDateIssued.Text)); cmd.Parameters.Add(new SqlParameter("@Purpose", ddlPurpose.Text)); cmd.Parameters.Add(new SqlParameter("@status1", ddlStatus.Text)); cmd.Parameters.Add(new SqlParameter("@Action_Date", txtActionDate.Text == "" ? DBNull.Value : (object)txtActionDate.Text)); //cmd.Parameters.Add(new SqlParameter("@DwgRegID", index)); cmd.ExecuteNonQuery(); if (con.State == ConnectionState.Open) { con.Close(); } GridView1.DataBind(); } SqlConnection con1 = new SqlConnection("Data Source= MEHDI-PC\\SQLExpress; Initial Catalog=PIMS; Integrated Security=True"); string sql1 = "SELECT DwgRegID,Ref,Dwg_Ref,Title,Dwg_Received_Date,Rev,Trade,type1,Produced_Date,Produced_By,Submittal_Ref,Issued_To,Date_Issued,Purpose,status1,Action_Date from dbo.Dwg_Register"; con1.Open(); SqlDataAdapter da = new SqlDataAdapter(sql1,con1); DataSet ds1 = new DataSet(); da.Fill(ds1); GridView1.DataSource = ds1; GridView1.DataBind(); if (con1.State == ConnectionState.Open) { con1.Close(); } GridView1.EditIndex = -1; GridView1.DataBind(); MultiView1.SetActiveView(ViewGrid); lblUpdate.Text = "Record updated sucessfully."; } </code></pre> <p>When I run the following SQL query in SSMS: </p> <pre><code>UPDATE dbo.Dwg_Register SET Ref=4 from dbo.Dwg_Register where DwgRegID=23 </code></pre> <p>this command does store value 4 into dbo.Dwg_Register. But this command is not storing values into sql table from the GridView. </p> <p>My EditRow function code is as following:</p> <pre><code> protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e) { MultiView1.SetActiveView(ViewGrid); GridView1.EditIndex = e.NewEditIndex; GridView1.DataBind(); </code></pre> <p>}</p> <p>This <code>RowEditing</code> function changes <code>RowState</code> in the <code>GridView</code> to edit-mode. But when I edit a cell value in the <code>Gridview</code> and press update button to store the new value to Sql table, Update function doesnt do it. This code neither throws any errors. Please help me identify where I might be going wrong. Thanks.</p>
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    1. COAbout the error in SSMS: you have to set up all the parameters that you're doing in code in SSMS as well. Otherwise, you'll get that error. For example, you'd do something like `declare @ref varchar(30)` for the `@ref` parameter.
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      1. USMichael Todd
    2. COIn SSMS, put the real values (not as parameters) as they are on the form and check if the query goes thru or gives an error. I guess you data is ill-formed for the query to run through.
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    3. COcheck your database connection.
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