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c# create datatable

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SubZero answered on August 20, 2020 Popularity 7/10 Helpfulness 6/10

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c# create datatable

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DataTable dt = new DataTable();

// Add columns to the DataTable
dt.Columns.Add("ID", typeof(int));
dt.Columns.Add("Name", typeof(string));
dt.Columns.Add("Age", typeof(int));

// Add rows to the DataTable
dt.Rows.Add(1, "John", 30);
dt.Rows.Add(2, "Jane", 25);
dt.Rows.Add(3, "Bob", 40);

This creates a DataTable with three columns: "ID" (of type int), "Name" (of type string), and "Age" (of type int). It then adds three rows to the DataTable, with values for each of the columns.

Popularity 7/10 Helpfulness 6/10 Language csharp

Source: Grepper

Tags: c# datatable

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Contributed on Mar 05 2023

SubZero

0 Answers Avg Quality 2/10

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C# create DataTable

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DataTable dt = new DataTable(); 
dt.Clear();
dt.Columns.Add("Name");
dt.Columns.Add("Marks");

DataRow _ravi = dt.NewRow();
_ravi["Name"] = "ravi";
_ravi["Marks"] = "500";
dt.Rows.Add(_ravi);

Popularity 10/10 Helpfulness 7/10 Language csharp

Source: Grepper

Tags: c# c

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Contributed on Aug 20 2020

Arti

0 Answers Avg Quality 2/10

c# create datatable from class

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you can use reflection to get the properties of the class and create columns in the DataTable based on them. Then, you can loop through the instances of the class and add them as rows to the DataTable.

public static DataTable ToDataTable<T>(List<T> items)
{
    DataTable dataTable = new DataTable(typeof(T).Name);
    PropertyInfo[] properties = typeof(T).GetProperties(BindingFlags.Public | BindingFlags.Instance);
    
    foreach (PropertyInfo property in properties)
    {
        dataTable.Columns.Add(property.Name, Nullable.GetUnderlyingType(property.PropertyType) ?? property.PropertyType);
    }
    
    foreach (T item in items)
    {
        DataRow row = dataTable.NewRow();
        foreach (PropertyInfo property in properties)
        {
            row[property.Name] = property.GetValue(item) ?? DBNull.Value;
        }
        dataTable.Rows.Add(row);
    }
    
    return dataTable;
}

//To use this method, you can pass in a List of instances of your class, and it will return a DataTable that represents the data in the List. For example:
List<Person> people = new List<Person> {
    new Person { Name = "John", Age = 30 },
    new Person { Name = "Jane", Age = 25 }
};

DataTable dataTable = ToDataTable<Person>(people);

This will create a DataTable with columns "Name" and "Age", and two rows of data for John and Jane.

Popularity 8/10 Helpfulness 6/10 Language csharp

Source: Grepper

Tags: c# class datatable datatabl

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Contributed on Mar 05 2023

SubZero

0 Answers Avg Quality 2/10

C# create DataTable

Comment

DataTable dt = new DataTable(); 
dt.Clear();
dt.Columns.Add("Name");
dt.Columns.Add("Marks");
DataRow _ravi = dt.NewRow();
_ravi["Name"] = "ravi";
_ravi["Marks"] = "500";
dt.Rows.Add(_ravi);

Popularity 9/10 Helpfulness 3/10 Language csharp

Source: coders911.org

Tags: c# datatable data

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Contributed on Mar 23 2022

Gorgeous Goshawk

0 Answers Avg Quality 2/10

datatable in c#

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String[] arr = new String[] { "a", "b" };
            DataTable dt = new DataTable();
            dt.Columns.Add("name");
            dt.Columns.Add("other");
            dt.Rows.Add(arr);

            foreach (DataRow r in dt.Rows)
            {
                Console.WriteLine(r["name"].ToString() + " - " + r["other"].ToString());
            }

Popularity 10/10 Helpfulness 2/10 Language csharp

Source: social.msdn.microsoft.com

Tags: c# c

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Contributed on Oct 19 2021

Blue-eyed Boar

0 Answers Avg Quality 2/10

c# create datatable

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