Failed To Enable Constraints / One Or More Rows Contain Values Violating Non-null
Sep 20, 2015
I am facing this error in binding of DropDownList in Grid.I am using TableAdapter inside DataSet.xsd (DLL).aspx.cs code to bind DropDownList inside Grid:
GridEditableItem item = e.Item as GridEditableItem;
DropDownList rlist = item.FindControl("ddlRelationship") as DropDownList;
rlist.DataTextField = "RName";
rlist.DataValueField = "RID";
rlist.DataSource = SDM.BU.GetAllRelationship();
rlist.DataBind();
[code]....
I am unable to understand why this error is coming. Whenever I click on Add New button of RadGrid, Add panel opens with this Logging Exception.
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May 7, 2015
This is my UserRoleList.aspx.cs Code where i am passing the session variable to the page Default.aspx.cs..
And the error is: Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints. I have gone through many pages , and tried by making the AllowDbNull property making True and then different things.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
[code]...
This is the code of the second page Default.aspx.cs where i have to user the session varaible to pass in the SQL fucntion named GetDataByUserId as shown below:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
[Code] ....
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Oct 19, 2010
getting below error when trying to display list of providers, i really appreciate feedback on troubleshooting and fixing it.Server Error in '/testload' Application.Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints.Description:An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.Exception Details:ystem.Data.ConstraintException: Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints.Source Error:
[Code]....
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Jul 16, 2010
[Code]....
I know there are a couple of posts about this already, but I still can't figure it out.
I'm using Table Adapters method called GetBBNewsByNewsID with the following SQL query:
SELECT Description
FROM BB_News
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The table has columns: NewsID, Header and Description. I only chose Description cuz that's all I wanted to show.
This is my code (aspx.cs):
[code]....
The error I keep getting is:
Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints.
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Sep 26, 2010
I have a property table and an image table.
I want this query to return all distinct properties and a thumbnail image. However some properties don't have thumbnail images and they don't get returned by the query. If the imgid is null I still want to return the property. Not sure of how to do this.
[Code]....
[Code]....
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Feb 1, 2011
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<%# Eval("add_1") & ","%>
<%# Eval("Add_2") & ","%>
<%# Eval("Add_3") & ","%>
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Rose Cottage, 123 New Road, Margate,
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Feb 22, 2011
I have an Ajax call as below
[code]....
I can access data.rows.length in all browsers but In chrome data.rows is null
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May 24, 2013
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Apr 3, 2013
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<Columns>
<asp:BoundField DataField="slno" HeaderText="SerialNo"
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May 3, 2010
I am limiting file size users can upload to the site from Web.config. As explained here, it should throw a ConfigurationErrorsException if size is not accepted. I tried to catch it from the action method or controller for upload requests but no luck. Connection is resetted and I can't get it to show an error page.
I tried catching it in BeginRequest event but no matter what I do the exception is unhandled.
Here's the code:
protected void Application_BeginRequest(Object sender, EventArgs e)
{
HttpContext context = ((HttpApplication)sender).Context;
try
{
if (context.Request.ContentLength > maxRequestLength)
{
[Code].....
But I still get this:
Maximum request length exceeded.
Description: An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Web.HttpException: Maximum request length exceeded.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Update:
What method raises the exception anyway? If I read the request it raises exception If I don't read it at all, I get "101 Connection Reset" in browser. What can be done here?
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I came across the below article, I would like to know how to properly respond to the drop or stop event so that I can show the Save button only once someone changed the order. In other words, I would like the Save button hidden initially, only to make it visible once a drag and drop has occurred.
[URL]....
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Jan 28, 2010
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I'm fairly new to ASP.Net MVC 2 and understand the MVC pattern in itself. But my question is what's the best way to populate dropdownlists in the UI sticking to the MVC pattern. Should I be going through the controller? Every article I've seen to do this shows how to do it using javascript and jquery. I have a test application that I'm re-writing in MVC2 I have my dropdowns working with jquery basically calling a WCF Data Service that returns JSON which populates the dropdowns. Seems to me though that this is bypassing the controller and going straight to the model therefore strictly violating the MVC pattern. Or am I missing something obvious here. You thoughts or best practices would be greatly welcome here.
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I have a DataTable for which a PrimaryKey constraint has been set to be a combination of an integer column and a datetime column. When I try to 'Find' a row by saying,
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I have a query that averages data in 15 minute increments that I display in a chart using Microsoft Chart Controls. Everything works fine except when there is no data for a 15 minute increment. How do I get the chart to show just the empty time slot?
Query:
[Code]....
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Mar 20, 2014
May i know how to create the control function in asp.net to control the values ?
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Nov 28, 2010
how to violation of primary constraints
[Code]....
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Oct 20, 2010
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Jul 20, 2010
I have two tables invoices and receipts
i have to show the alternate data of invoices and receipts in datagrid; condition is that
if Date column in INVOICE table matches with invoice columns in RECEIPTS table then the corresponding row of RECEIPTS table should come after INVOICES table row
if there is no match then INVOICES table next row will come, and
if there is match then then RECEIPTS TABLE row will appear
tables are below
INVOICES:
Date Sales Client Amount Paid Status Notes
03/27/2008 Chinmoy Panda ETA Prospect 100 SENT qwwert
04/30/2008 Amit Sharma ETA Prospect 1000 FROZEN
05/13/2008 Chinmoy Panda ETA Prospect 40000 SENT
[code]...
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Jan 28, 2010
protected void rptNavigation_ItemDataBound(object sender, System.Web.UI.WebControls.RepeaterItemEventArgs e){
if (!((e.Item.ItemType == ListItemType.AlternatingItem) || (e.Item.ItemType == ListItemType.Item)))
{return;
}string Name = string.Empty;
if (IsDBNull(e.Item.DataItem["FullName"])) {
Name = String.Empty;}
else {Name = (string)(e.Item.DataItem["FullName"]);}
Literal ltlLiteral = (Literal)(e.Item.FindControl("ltlLiteral"));
ltlLiteral.Text = Name.ToString();
I get error for IsDbNull - Error 1 The name 'IsDBNull' does not exist in the current context. What's the best way to check for null values returned from db? also I get errors on both lines where (e.Item.FindControl(ltlLiteral")); is present ERror: Cannot apply indexing with [] to an expression of type 'object'
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Aug 2, 2010
Using Combobox in my webpage, in a combobox i want to display a null values first, then it should display all values..
Combobox.item = null values
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Combobox.item = 2
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ada = new OdbcDataAdapter(cmd);
ada.Fill(data1);
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Above code is working, but is displaying all the values, first it should display a null value, then it should display all the values.
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