'System.Data.Entity.DynamicProxies.ProductDoes not contain a property
with the name ‘ProductId’
I got this error “System.Data.Entity.DynamicProxies.Product Does not contain a property with the name ‘ProductId” while binding the object to the dropdownlist using the c# .net.
Problem:
public void LoadProductsDropDownList()
{
cboProducts.DataTextField = "Name";
cboProducts.DataValueField = "ProductId ";
cboProducts.DataSource = db.Products.ToList();
cboProducts.DataBind();
ListItem li = new ListItem("Select Product", "-1");
cboProducts.Items.Insert(0, li);
}
Solution:
I found the cause of this error due to by mistaken; I left space in DataValueField property field productId . Also, it will happen if you misspelled DataTextField or DataValuefield property values.
public void LoadProductsDropDownList()
{
cboProducts.DataTextField = "Name";
cboProducts.DataValueField = "ProductId";
cboProducts.DataSource = db.Products.ToList();
cboProducts.DataBind();
ListItem li = new ListItem("Select Product", "-1");
cboProducts.Items.Insert(0, li);
}
Post your comments / questions
Recent Article
- Your system's memory configuration has changed since it entered hibernation.
- Save image to client browser using jQuery?
- Get filename of image jQuery?
- How to get the image src using JavaScript?
- System.Net.Http.Formatting, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' which has a higher version than referenced assembly 'System.Net.Http.Formatting' with identity 'System.Net.Http.Formatting, Version=4.0.0.0
- Cordova Android build error "Cannot read property 'length' of undefined". An error occurred while running subprocess cordova.
- ERROR in The Angular Compiler requires TypeScript >=3.9.2 and <4.0.0 but 3.8.3 was found instead
- Code ENOLOCAL Could not install from "android" as it does not contain a package.json file.
Related Article